These boots have everything you need and nothing you don&';t. And we think that&';s what perfection is all about. Did we mention they&';ll keep you warm & dry no matter the weather? 100% Waterproof Constructed with 5mm Neo-Tech waterproof insulation BOGS Max-Wick evaporates sweat to keep feet dry Bio-based footbed provides comfort while minimizing environmental impact Easy on handles Comfort rated to -4AdegF/-20AdegC Reflective temperature rating mark on heel