Terramar knows how to engineer natural fibers for a performance base layer. They have been doing it for more than forty years. The Thermawool Men's Half Zip is designed to keep you warm, dry and comfortable in the mountains, in the woods and any other place you look for challenges.Read more
ClimaSense® is a propriety fabric technology formulated to adapt to an active body's changing physiology. A number of factors influence the skins surface temperature. Key among them are the outside weather conditions and the activity level. ClimaSense® is engineered to recognize an individual's need to warm up or cool down. When you are cold the fiber structure reacts by contracting to trap air and create heat. When you are hot, the fiber structure expands to allow heat and moisture vapor to escape. The result is a perfect "inner climate" balance to keep you comfortable in all conditions. ClimaSense⪚ is proud to be bluesign® approved.
Soft and natural Merino wool insulates to keep you warm and cozy - even when wet. The fabric acts as a complete heat exchange system, keeping you warm in extreme cold weather and cool when you become overheated. Beautiful fabric, itch-free and breathable.
Ultraviolet Protection Factor (UPF) is a measure of the percentage of ultraviolet sunlight that reaches your skin through a given fabric, estimating the additional amount of time you can spend in the sun with a certain garment on. (UPF 25 meaning you can withstand 25 times the amount of sun you could without protection).