The men's RUGGED TRACK Boots by ECCO have a durable build and enough comfort to keep you going all through winter. Primaloft insulation is a synthetic that traps heat and keeps you warm even when wet. The oiled nubuck uppers have been treated with a water-repellent treatment to shed moisture and snow. Comfort and stability come strong with Receptor Technology. The sole is directly bound to the upper, without the need for glue or stitching.