Arc'teryx Rho LTW Neck Gaiter MAPP Merino Wool and Elastane Imported 2" high 5" wide RHO LTW NECK GAITER - A 95% wool & 5% Spandex neck gaiter keeps the snow out and the warm in. ALPINISM & CLIMBING - Climbing equipment designed for efficient movement and protection in alpine environments LIGHTWEIGHT WOOL - Merino wool. Light weight, moisture management, natural anti-odor properties. NATURAL FIBRE - Textiles made from natural fibres provide inherent benefits and next-to-skin comfort. RHO - Thermally efficient base layer with excellent moisture management properties. Has stretch comfort.