The Mountain Equipment Men\'s Eclipse Zip Tee is a fitted zip tee perfect for mountain sports where you need maximum insulation and stretch. Wear it as a lightweight mid-layer, a heavyweight base or alone during more intensive activities. This fast drying, unrestrictive jacket is constructed from POLARTEC® Power Dry® 200 fleece help you maintain optimum body heat while keeping bulk to a minimum. Permenant Polygiene® anti-microbial technology keeps the jacket fresh between washes. The Eclipse has been designed with minimal seams for extreme comfort whether you\'re ascending a rock face or hitting the slopes.