Any season, any activity HH LIFAA(R) base layers keep you warm, dry and comfortable. Our game-changing, hydrophobic LIFAA(R) yarn technology delivers light insulation and wicking moisture management. Use it for everyday wear or high-performance activities. We&';ve been excelling at HHA(R) LIFAA(R) base layer technology for 40 years. That&';s why our base layers are the go-to choice for professional athletes. Details: Fiber content: : Shell: 100% Polypropylene Weight: 150g Features : LIFAA(R) Lightweight insulation 100% LIFAA(R) Flatlock seams for max comfort Natural stretch fabric bluesignA(R) product Use For : a Back Country/Ski Touring a Camping & Hiking a Coastal Sailing a Dinghy/Lifestyle a Off-Piste/Side Country a Mountaineering a Ocean Offshore Sailing