Minus33 Merino Wool Women&#39;s Magalloway Lightweight Bottom 100% Merino Wool Imported QUALITY LIGHTWEIGHT BASELAYER: 100% Merino Wool designed to be "First-On-Last-Off" active wear. Easy care technology means your merino wool is machine washable and dryable. Simplicity makes this merino wool thermal an essential part of your outdoor gear. CRAFTED TO FIT: Sizes XS to 3XL in a regular fit. Gusseted for durability and mobility. Soft as cashmere and comfortable next to the skin. Naturally wicks moisture and controls odor. Outfitting anyone from the Hard-at-Work to the Hard-at-Play. EXPERIENCED BRAND: Although there are many copy-cats on the market today, Minus33 has been a trusted brand since 2004. IMPORTED: As the legacy of a 100+ year old USA based woolen company, Minus33 knows quality and comfort in Merino Wool. We are committed to bringing you the best Merino Wool products at a reasonable price. TECHNICAL DETAILS: 100% 17.5 Micron Merino Wool 170 g/m2 Jersey knit construction with flatlock seams. Garment Weight Size Medium = 5.6 oz. (158 grams). UPF Rating 25