Sea to Summit Big River Dry Bag - 20L

Reviews

• John H.

  Rated 5 out of 5

  One of the best pieces of outdoor equipment I've ever had.

  05/23/26

  The Big River dry bags are super useful for bike packing. I use the 20 L size between my handlebars on a nifty little stabilizing rig that I designed. I use either the 20 L or 35 L on the rear racks. What's so good about these bags? 1. The outside material is much lighter than Cordura but still very abrasion resistant. 2. The bag shape is oval which makes them inherently stable on the top of my rear rack. I wish that I had these bags when I was doing self-contained white water kayaking multi-day trips. 3. There are 4 built in attachment loops on the sides that makes lashing to racks so much easier with no chance of sliding off. These are truly great pieces of equipment.

• Ryan L.

  Rated 5 out of 5

  Keeps everything dry

  01/26/26

  perfect for paddleboarding

• megan W.

  Rated 4 out of 5

  Huge bag

  09/30/25

  I’m happy with the size I chose, looks like you can fit everything you need in there. Material is lightweight but seems very durable. Looking forward to taking out.

• Jeremy K.

  Rated 5 out of 5

  Great Dry Bags

  09/29/25

  Bought the 20L and 13L bags mainly for my bikepacking setup and really pleased with them so far. Nice and strong, easy to strap down.

• Angela J.

  Rated 5 out of 5

  Just the bag I’ve been looking for

  09/16/25

  I have been wanting a dry bag this size 20L for a long time. This one is perfect for my day bag in and out of the canoe, holding my raingear, snacks, safety equipment, sketching supplies. I particularly like the loops on both sides of the bag for securing to my seat or thwart. Red colour is bright and easy to spot.

• Josiane C.

  Rated 5 out of 5

  5 étoiles pour le service altitude

  06/26/25

  La commande a été livre rapidement. Le sac me semble de bonne qualité mais je n'ai pas encore eu la chance de le tester lors dune sortie en planche a pagaie.

• Thomas D.

  Rated 5 out of 5

  Étanche et fonctionnel!

  05/07/25

  C’est le deuxième que j’achète, toujours autant satisfait ! Et la garantie à vie de sea to summit rend le sac éternel!

• Emily C.

  Rated 5 out of 5

  Good quality

  09/26/24

  Very sturdy, love the side loops

• Karen

  Rated 5 out of 5

  Solid construction, with handy features

  09/09/24

  I love the lash points on BOTH sides of this stuff sack, making it versatile enough to strap to your bike, throw into your canoe, or strap to your back! Great design, solid construction

• patrice a.

  Rated 5 out of 5

  Sac étanche

  08/06/24

  Ce sac vient de faire 6300 km sur le porte bagage arrière de ma moto. Robuste et vraiment étanche!