QUALITY MIDWEIGHT BASELAYER: 100% Merino Wool is super soft and extremely comfortable. This three season merino wool thermal bottom has the versatility and warmth to make this an essential part of your outdoor gear. Fits sizes XS to 6XL and Tall Sizes M-Tall to 4X-Tall (4XL to 6XL and Tall sizes in Black Only) Minus33 offers the largest size selection. Outfitting anyone from the Hard-at-Work to the Hard-at-Play. WEAR THESE FOR ANYTHING: Hiking, running, camping, overlanding, hunting, ice fishing, skiing, snowboarding, snowshoeing, the activities are endless. Wear this base layer under your clothes for cold weather or just wear them by themselves to lounge around. These thermal long johns are perfect for three season wear. Fall, winter, and spring. Designed to keep you warm, dry, and ready for hours of outdoor fun! EXPERIENCED BRAND: Although there are many copy-cats on the market today, Minus33 has been a trusted brand since 2004. We see it all – from beautiful fall leaves, to white, snowy winters, to colorful springs and summers. We’re New Englanders, plain and simple. We’ve been hiking, camping, skiing, and everything else in between since we were kids. No amount of snow keeps us down, and we only continue to thrive in the summer. TECHNICAL DETAILS: 100% 18.5 Micron Merino Wool 235 g/m2 Interlock knit construction with flatlock seams. Garment Weight Size Large = 9.6 oz. (272 grams). UPF Rating 50+ 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.