The simple design of the Valley Balaclava makes it easy to wear, but the superior Bluesign® approved 250GSM Nuyarn merino fabric is a technological wonder with an unmatched warmth-to-weight ratio. The long-term durability of the superfine 18 micron non-mulsed Australian merino wool combined with delightful softness and 5x faster drying time makes this a well-engineered bit of simplicity that's a must-have for adventurers. Features: Superior Bluesign® approved waffle-knit 250GSM Nuyarn merino fabric technology offers extra loft for an unmatched warmth-to-weight ratio, 5x faster drying, and remarkable long-term durability Superfine 18 micron non-mulsed Australian merino Wool for maximum softness and wearability  90% Superfine Nuyarn® merino wool 10% Nylon Valley Balaclava