W's Thermoball Progressive Zip II WP jetboil Bite valve self-seals after each

Bite valve self-seals after each drink

membrane and durable water repellent finish are made without perfluorinated chemicals (PFCs/PFAS)

An adjustable hood seals in warmth

synthetic HEATSEEKER™ for warmth in a variety of conditions

W's Thermoball Progressive Zip II WP jetboil Bite valve self-seals after eachStay warm, dry and comfortable on city adventures with the Womens THERMOBALL Progressive Zip II Waterproof Boots. These lightweight, waterproof and low cut boots features THERMOBALL insulation and recycled P. E. T. ripstop uppers. Our waterproof footwear incorporates a variety of advanced waterproofing materials, treatments, and processes. To help keep feet dry, we use internal waterproof membranes and or adhesive and seam seal constructions.