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Sea to Summit Ether Light XR Pro Insulated ASC Sleeping Mat - Large
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An evolution of the renowned Ether Light mats has arrived with the XR Pro. Staying true to their comfort and durability, the XR Pro boasts ThermalCore technology which increases insulation value while keeping weight and packed volume to a minimum. Air Sprung Cell construction provides 10cm of plush comfort wherever you sleep. Inflation and deflation are a breeze with the Xpress valve and Airstream pump built into the stuff sack. With double the weld strength of previous models the XR Pro is perfect for alpine adventurers, cold-weather hunters to winter campers. Outdoor winter sleep never felt this good.
Features
• Best use: Winter Camping, Mountaineering, Cold Weather Backpacking
• ThermalCore insulation consists of multiple TRM layers that are quiet and reflect back infrared energy to the sleeper for increased insulation
• Four-season capable, with an ASTM-tested R-Value of 7.4
• 25% lighter weight and half the packed size compared to prior models
• Air sprung cell construction, 10cm/3.9in thick for plush, stable comfort in any sleeping position
• Xpress valve and pumpsack integrated into stuff sack make inflation, adjustment and deflation a breeze
• Increased weld strength for greater durability
• PillowLock System patches secure your Aeros Pillow for a slip-free sleep
• Durable and Packable: Smaller, lighter and stronger than previous Ether Light models giving you more space in your pack while you explore the world
• Superior Insulation and Comfort: Your warmth reflects back to you with minimal internal air movement with three-layers of Thermal Core Insulation. And you get comfort in any position with 4in/10cm of plush Air Sprung Cell construction
• Comfort and Warmth: Thermal Core Insulation reflects the warmth back to the sleeper and Air Sprung Cell construction, 4in/10cm thick provide plush comfort in any sleeping position
• Thermal Core Insulation: Thermal Core insulation uses a single or multiple layers of TRM material to reflect warmth back to the sleeper. The TRM layers reduce internal air movement, and the smaller die cuts, compared to prior models, reduce this further still. The result is a significant increase in both R-Value and in real-world insulation performance, while reducing weight and packed volume
• Xpress Valve: Sea to Summit developed the Xpress Valve to make inflation, deflation and adjustment of its air mats quicker and simpler than conventional air mats. The valve integrates a one-way inflate port, a rapid dump deflate port and a fine-tune button into a single, low-profile unit. The Xpress valve fits the nozzle of the Airstream pump integrated into the stuff sack supplied with your Sea to Summit Air Sprung Cell sleeping mat. (Pro Tip-turn the inflator bag of the sleeping mat pump inside out to reveal a nozzle sized perfectly for the mini-Xpress valve of an Aeros Pillow)
• ASTM F3340 R-Value Testing: To ensure that you will be warm when you sleep(Especially when the ground is colder), it is essential to know how well your sleeping mat resists heat loss into the ground. This resistance is known as an R-Value. A laboratory-tested R-Value is the only way to measure resistance to heat loss. Sea to Summit has always provided independent lab-tested R-Values for its sleeping mats. Since January 2020 we have used the industry standard ASTM F3340 test to provide R-Values for our mats. There are several other factors which will determine how well a sleeping mat will insulate, but the standardized ASTM R-Value test means you can compare resistance to heat loss in sleeping mats across different brands
• Integrated Airstream: The Airstream Pumpsack is Sea to Summit's big volume mattress pump which we've now integrated into the stuff sack of every Air Sprung Cell mat. The clever design opens at one end to stow the air mat and the other end unfolds to become the built-in pump. The Airstream Pumpsack can be inflated with a single breath and takes just two or three cycles to fill our mats. Not only is it faster than inflation by mouth, but there is minimal breath condensation entering the mat and it eliminates dizziness from blowing the mat up directly by mouth. The Airstream Pumpsack is also compatible with Sea to Summit's smaller multifunction valve, which is now featured on the updated Aeros pillow range, along with the Air Seats
• Pillow Lock System: The Pillow Lock System comprises of self-adhesive hook-and-loop patches which are supplied with all Sea to Summit Aeros Pillows(As of Spring 2026). Attached to your sleeping mat, these patches secure your pillow and prevent it slipping. All Sea to Summit Pillows(As of Spring 2019)are compatible with this system
Materials
• Mat/Stuff Sack: 100% Nylon
• Valve: 100% TPU
Specifications
• Shape: Rectangular Wide
• Thickness: 3.9in/10cm
• R-Value: 7.4
• Recommended User Height: 78in/198cm
• Packed Size: 9x5x5in/24x12.5x12.5cm
• Dimensions: 78x25x4in/198x64x10cm
• Weight: 720g/25.4oz
• Packed Weight: 780g/27.5oz
Includes
• Stuff sack with integrated Pumpsack
• PillowLock patches
• Repair kit
Features
• Best use: Winter Camping, Mountaineering, Cold Weather Backpacking
• ThermalCore insulation consists of multiple TRM layers that are quiet and reflect back infrared energy to the sleeper for increased insulation
• Four-season capable, with an ASTM-tested R-Value of 7.4
• 25% lighter weight and half the packed size compared to prior models
• Air sprung cell construction, 10cm/3.9in thick for plush, stable comfort in any sleeping position
• Xpress valve and pumpsack integrated into stuff sack make inflation, adjustment and deflation a breeze
• Increased weld strength for greater durability
• PillowLock System patches secure your Aeros Pillow for a slip-free sleep
• Durable and Packable: Smaller, lighter and stronger than previous Ether Light models giving you more space in your pack while you explore the world
• Superior Insulation and Comfort: Your warmth reflects back to you with minimal internal air movement with three-layers of Thermal Core Insulation. And you get comfort in any position with 4in/10cm of plush Air Sprung Cell construction
• Comfort and Warmth: Thermal Core Insulation reflects the warmth back to the sleeper and Air Sprung Cell construction, 4in/10cm thick provide plush comfort in any sleeping position
• Thermal Core Insulation: Thermal Core insulation uses a single or multiple layers of TRM material to reflect warmth back to the sleeper. The TRM layers reduce internal air movement, and the smaller die cuts, compared to prior models, reduce this further still. The result is a significant increase in both R-Value and in real-world insulation performance, while reducing weight and packed volume
• Xpress Valve: Sea to Summit developed the Xpress Valve to make inflation, deflation and adjustment of its air mats quicker and simpler than conventional air mats. The valve integrates a one-way inflate port, a rapid dump deflate port and a fine-tune button into a single, low-profile unit. The Xpress valve fits the nozzle of the Airstream pump integrated into the stuff sack supplied with your Sea to Summit Air Sprung Cell sleeping mat. (Pro Tip-turn the inflator bag of the sleeping mat pump inside out to reveal a nozzle sized perfectly for the mini-Xpress valve of an Aeros Pillow)
• ASTM F3340 R-Value Testing: To ensure that you will be warm when you sleep(Especially when the ground is colder), it is essential to know how well your sleeping mat resists heat loss into the ground. This resistance is known as an R-Value. A laboratory-tested R-Value is the only way to measure resistance to heat loss. Sea to Summit has always provided independent lab-tested R-Values for its sleeping mats. Since January 2020 we have used the industry standard ASTM F3340 test to provide R-Values for our mats. There are several other factors which will determine how well a sleeping mat will insulate, but the standardized ASTM R-Value test means you can compare resistance to heat loss in sleeping mats across different brands
• Integrated Airstream: The Airstream Pumpsack is Sea to Summit's big volume mattress pump which we've now integrated into the stuff sack of every Air Sprung Cell mat. The clever design opens at one end to stow the air mat and the other end unfolds to become the built-in pump. The Airstream Pumpsack can be inflated with a single breath and takes just two or three cycles to fill our mats. Not only is it faster than inflation by mouth, but there is minimal breath condensation entering the mat and it eliminates dizziness from blowing the mat up directly by mouth. The Airstream Pumpsack is also compatible with Sea to Summit's smaller multifunction valve, which is now featured on the updated Aeros pillow range, along with the Air Seats
• Pillow Lock System: The Pillow Lock System comprises of self-adhesive hook-and-loop patches which are supplied with all Sea to Summit Aeros Pillows(As of Spring 2026). Attached to your sleeping mat, these patches secure your pillow and prevent it slipping. All Sea to Summit Pillows(As of Spring 2019)are compatible with this system
Materials
• Mat/Stuff Sack: 100% Nylon
• Valve: 100% TPU
Specifications
• Shape: Rectangular Wide
• Thickness: 3.9in/10cm
• R-Value: 7.4
• Recommended User Height: 78in/198cm
• Packed Size: 9x5x5in/24x12.5x12.5cm
• Dimensions: 78x25x4in/198x64x10cm
• Weight: 720g/25.4oz
• Packed Weight: 780g/27.5oz
Includes
• Stuff sack with integrated Pumpsack
• PillowLock patches
• Repair kit
An evolution of the renowned Ether Light mats has arrived with the XR Pro. Staying true to their comfort and durability, the XR Pro boasts ThermalCore technology which increases insulation value while keeping weight and packed volume to a minimum. Air Sprung Cell construction provides 10cm of plush comfort wherever you sleep. Inflation and deflation are a breeze with the Xpress valve and Airstream pump built into the stuff sack. With double the weld strength of previous models the XR Pro is perfect for alpine adventurers, cold-weather hunters to winter campers. Outdoor winter sleep never felt this good.
Features
• Best use: Winter Camping, Mountaineering, Cold Weather Backpacking
• ThermalCore insulation consists of multiple TRM layers that are quiet and reflect back infrared energy to the sleeper for increased insulation
• Four-season capable, with an ASTM-tested R-Value of 7.4
• 25% lighter weight and half the packed size compared to prior models
• Air sprung cell construction, 10cm/3.9in thick for plush, stable comfort in any sleeping position
• Xpress valve and pumpsack integrated into stuff sack make inflation, adjustment and deflation a breeze
• Increased weld strength for greater durability
• PillowLock System patches secure your Aeros Pillow for a slip-free sleep
• Durable and Packable: Smaller, lighter and stronger than previous Ether Light models giving you more space in your pack while you explore the world
• Superior Insulation and Comfort: Your warmth reflects back to you with minimal internal air movement with three-layers of Thermal Core Insulation. And you get comfort in any position with 4in/10cm of plush Air Sprung Cell construction
• Comfort and Warmth: Thermal Core Insulation reflects the warmth back to the sleeper and Air Sprung Cell construction, 4in/10cm thick provide plush comfort in any sleeping position
• Thermal Core Insulation: Thermal Core insulation uses a single or multiple layers of TRM material to reflect warmth back to the sleeper. The TRM layers reduce internal air movement, and the smaller die cuts, compared to prior models, reduce this further still. The result is a significant increase in both R-Value and in real-world insulation performance, while reducing weight and packed volume
• Xpress Valve: Sea to Summit developed the Xpress Valve to make inflation, deflation and adjustment of its air mats quicker and simpler than conventional air mats. The valve integrates a one-way inflate port, a rapid dump deflate port and a fine-tune button into a single, low-profile unit. The Xpress valve fits the nozzle of the Airstream pump integrated into the stuff sack supplied with your Sea to Summit Air Sprung Cell sleeping mat. (Pro Tip-turn the inflator bag of the sleeping mat pump inside out to reveal a nozzle sized perfectly for the mini-Xpress valve of an Aeros Pillow)
• ASTM F3340 R-Value Testing: To ensure that you will be warm when you sleep(Especially when the ground is colder), it is essential to know how well your sleeping mat resists heat loss into the ground. This resistance is known as an R-Value. A laboratory-tested R-Value is the only way to measure resistance to heat loss. Sea to Summit has always provided independent lab-tested R-Values for its sleeping mats. Since January 2020 we have used the industry standard ASTM F3340 test to provide R-Values for our mats. There are several other factors which will determine how well a sleeping mat will insulate, but the standardized ASTM R-Value test means you can compare resistance to heat loss in sleeping mats across different brands
• Integrated Airstream: The Airstream Pumpsack is Sea to Summit's big volume mattress pump which we've now integrated into the stuff sack of every Air Sprung Cell mat. The clever design opens at one end to stow the air mat and the other end unfolds to become the built-in pump. The Airstream Pumpsack can be inflated with a single breath and takes just two or three cycles to fill our mats. Not only is it faster than inflation by mouth, but there is minimal breath condensation entering the mat and it eliminates dizziness from blowing the mat up directly by mouth. The Airstream Pumpsack is also compatible with Sea to Summit's smaller multifunction valve, which is now featured on the updated Aeros pillow range, along with the Air Seats
• Pillow Lock System: The Pillow Lock System comprises of self-adhesive hook-and-loop patches which are supplied with all Sea to Summit Aeros Pillows(As of Spring 2026). Attached to your sleeping mat, these patches secure your pillow and prevent it slipping. All Sea to Summit Pillows(As of Spring 2019)are compatible with this system
Materials
• Mat/Stuff Sack: 100% Nylon
• Valve: 100% TPU
Specifications
• Shape: Rectangular Wide
• Thickness: 3.9in/10cm
• R-Value: 7.4
• Recommended User Height: 78in/198cm
• Packed Size: 9x5x5in/24x12.5x12.5cm
• Dimensions: 78x25x4in/198x64x10cm
• Weight: 720g/25.4oz
• Packed Weight: 780g/27.5oz
Includes
• Stuff sack with integrated Pumpsack
• PillowLock patches
• Repair kit
Features
• Best use: Winter Camping, Mountaineering, Cold Weather Backpacking
• ThermalCore insulation consists of multiple TRM layers that are quiet and reflect back infrared energy to the sleeper for increased insulation
• Four-season capable, with an ASTM-tested R-Value of 7.4
• 25% lighter weight and half the packed size compared to prior models
• Air sprung cell construction, 10cm/3.9in thick for plush, stable comfort in any sleeping position
• Xpress valve and pumpsack integrated into stuff sack make inflation, adjustment and deflation a breeze
• Increased weld strength for greater durability
• PillowLock System patches secure your Aeros Pillow for a slip-free sleep
• Durable and Packable: Smaller, lighter and stronger than previous Ether Light models giving you more space in your pack while you explore the world
• Superior Insulation and Comfort: Your warmth reflects back to you with minimal internal air movement with three-layers of Thermal Core Insulation. And you get comfort in any position with 4in/10cm of plush Air Sprung Cell construction
• Comfort and Warmth: Thermal Core Insulation reflects the warmth back to the sleeper and Air Sprung Cell construction, 4in/10cm thick provide plush comfort in any sleeping position
• Thermal Core Insulation: Thermal Core insulation uses a single or multiple layers of TRM material to reflect warmth back to the sleeper. The TRM layers reduce internal air movement, and the smaller die cuts, compared to prior models, reduce this further still. The result is a significant increase in both R-Value and in real-world insulation performance, while reducing weight and packed volume
• Xpress Valve: Sea to Summit developed the Xpress Valve to make inflation, deflation and adjustment of its air mats quicker and simpler than conventional air mats. The valve integrates a one-way inflate port, a rapid dump deflate port and a fine-tune button into a single, low-profile unit. The Xpress valve fits the nozzle of the Airstream pump integrated into the stuff sack supplied with your Sea to Summit Air Sprung Cell sleeping mat. (Pro Tip-turn the inflator bag of the sleeping mat pump inside out to reveal a nozzle sized perfectly for the mini-Xpress valve of an Aeros Pillow)
• ASTM F3340 R-Value Testing: To ensure that you will be warm when you sleep(Especially when the ground is colder), it is essential to know how well your sleeping mat resists heat loss into the ground. This resistance is known as an R-Value. A laboratory-tested R-Value is the only way to measure resistance to heat loss. Sea to Summit has always provided independent lab-tested R-Values for its sleeping mats. Since January 2020 we have used the industry standard ASTM F3340 test to provide R-Values for our mats. There are several other factors which will determine how well a sleeping mat will insulate, but the standardized ASTM R-Value test means you can compare resistance to heat loss in sleeping mats across different brands
• Integrated Airstream: The Airstream Pumpsack is Sea to Summit's big volume mattress pump which we've now integrated into the stuff sack of every Air Sprung Cell mat. The clever design opens at one end to stow the air mat and the other end unfolds to become the built-in pump. The Airstream Pumpsack can be inflated with a single breath and takes just two or three cycles to fill our mats. Not only is it faster than inflation by mouth, but there is minimal breath condensation entering the mat and it eliminates dizziness from blowing the mat up directly by mouth. The Airstream Pumpsack is also compatible with Sea to Summit's smaller multifunction valve, which is now featured on the updated Aeros pillow range, along with the Air Seats
• Pillow Lock System: The Pillow Lock System comprises of self-adhesive hook-and-loop patches which are supplied with all Sea to Summit Aeros Pillows(As of Spring 2026). Attached to your sleeping mat, these patches secure your pillow and prevent it slipping. All Sea to Summit Pillows(As of Spring 2019)are compatible with this system
Materials
• Mat/Stuff Sack: 100% Nylon
• Valve: 100% TPU
Specifications
• Shape: Rectangular Wide
• Thickness: 3.9in/10cm
• R-Value: 7.4
• Recommended User Height: 78in/198cm
• Packed Size: 9x5x5in/24x12.5x12.5cm
• Dimensions: 78x25x4in/198x64x10cm
• Weight: 720g/25.4oz
• Packed Weight: 780g/27.5oz
Includes
• Stuff sack with integrated Pumpsack
• PillowLock patches
• Repair kit