Where is it written that winter boots have to be heavy boring unpackable toboggans for your feet nowhere weirdcoulda fooled us we were sick of what we saw out there so we built the chair 5 with 250g of low loft thinsulate in its removable liner and waterproof shell materials the chair 5 doesnt sacrifice any warmth but at the same time it weighs in at about half the weight of other boots and the chair 5 will compress down to the size of any normal shoe so you dont need an extra sui