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

• The proprietary insole is molded to match the specific shape and construction of every pair of shoes, this purpose-designed technology delivers the kind of fit, feel and performance that’s 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 you’re tired of feeling rocks and roots underfoot look no further
• There’s no denying feet sweat and trails can get muddy. There’s also no denying the ability of our proprietary waterproofing system, B-DRY, lets sweat escape while keeping moisture out