These boots are lightweight, waterproof and adjustable to keep the snow out. The rubber outsole provides traction and the light ThermoBall™ Eco insulation keeps feet cozy. The upper fabric is a recycled PET ripstop material.
This insulation uses small round clusters of Primaloft synthetic fiber that mimic down. It does a better job of trapping heat than traditional continuous-filament synthetic insulations, and has been shown to be as warm as 600 fill goose down. It is lightweight, compressible and water repellent.