evo.com | Smartwool Balaclavas > The Smartwool Active Fleece Hinged Balaclava keeps you covered when the cold won't quit. Soft Merino-blend fleece delivers breathable warmth, while the hinged design lets you vent on the fly without slowing down. Stretchy, low-profile, and ready for everything from storm laps to frosty morning skin tracks. Four-Way Stretch One Size Fits Most Main 54% Polyester / 38% Merino Wool / 8% Elastane Trim 56% Merino Wool / 44% Polyester Hinged Fit for Extra Venting | Smartwool Active Fleece Hinged Balaclava 2027 in Black | Wool/Elastane/Polyester