The Men's Big Sky II Mid Insulated Waterproof features:

• The proprietary waterproofing system, B-DRY, lets sweat escape while keeping moisture out.
• The proprietary insole molded to match the specific shape and construction of every pair of boots, this purpose-designed technology delivers the kind of fit, feel and performance thats unmatched in the industry
• These thermal insoles feature an insulated top sheet for warmth and a Mylar bottom sheet to reflect heat back to your foot, keeping toes nice and cozy
• Oboz ACT (Adaptive Cushioning Technology) Impact leverages Intelligent PU to create lightweight midsoles for a variety of footwear with long-lasting durability, support and rebound for optimal comfort
• 200 gram PrimaLoft BIO insulation and 100 gram for Big Sky Low. PrimaLoft has set sustainability forward with the first-ever biodegradable*, 100% recycled synthetic fiber, for insulation and fabric applications
• Great for day hiking but burly enough for a multi-day backpacking trip. Our quintessential hiking bottom package is built to be supportive and protective and features Vibram Megagrip. If youre tired of feeling rocks and roots underfoot look no further