SmartWool Liner 100% Wool Available in unisex sizes XS (6-6.5 inch hand size), S (7-7.5 inch hand size), M (8-8.5 inch hand size) and L (9-9.5 inch hand size). Measure around flat hand at the knuckles; do not include thumb - and - measure from base of palm to end of middle finger. Use largest of the two measurements. Versatile lightweight knit for easy movement, rib knit cuff for bulk free fit. 95% Merino Wool, 5% elastane Washer and dryer friendly!