A proprietary waterproof, breathable membrane that lets vapor out without letting water in.
A lightweight insulation that keeps you warm. Who knew charcoal bamboo could create something that keeps your feet warm? But it makes KEEN.WARM - a lightweight, anti microbial insulation that provides warmth where you need it most.
Can a sandal protect your toes? The answer is yes. The reason is KEEN Patented Toe Protection where the shoe outsoles wrap up and over the toes for ultimate protection.
Three layers of innovative heat trapping materials get sandwiched under foot to hold warm air in. Works a lot like the insulation in your house.