Stratus Storm Cell Under Helmet Hat ski map Eco-Friendly: Patagonia’s commitment to sustainability

Eco-Friendly: Patagonia’s commitment to sustainability is evident

It combines with soft seams on the brief liner that help reduce chafing

some base scratches and light top sheet damage

thanks to its high-modulus polyethylene construction

100% waterproof and breathable GORE-TEX® insert

Stratus Storm Cell Under Helmet Hat ski map Eco-Friendly: Patagonia’s commitment to sustainabilityDesigned for high output ski missions, the StormCell Under Helmet Hat delivers warmth and versatility in cold conditions. Made from 100% premium merino wool, it provides lightweight insulation, superior moisture management, and all day comfortwhether you're skinning uphill or charging down. Perfect under a helmet or on its own, this sustainably crafted, biodegradable layer keeps you warm while keeping your impact low.