Arc'teryx Rho Heavyweight Zip-Neck Base Layer Black Long Sleeve Top Men's Size Large see photos for approximate measurements to ensure fit. preowned in great shape one minor blemish on the back of the right arm. I'm showing it the best in the video. I think the photos exaggerate it more than IRL. "The men's Rho Heavyweight Zip-Neck base layer top from Arc'teryx is highly stretchy and pairs a durable, smooth face with a soft, brushed interior for warmth and wicking on cold, on-the-move days Polartec® Power Stretch® Pro fabric with excellent stretch and articulated patterning allows for unrestricted freedom of movement Durable nylon outer has a smooth face for comfortable layering; interior brushed fleece traps in heat, wicks moisture and feels soft next to the skin Contains materials that meet the bluesign® criteria Tall collar extends warmth; deep front zipper lets you dump heat with rapid ventilation and allows easier on/off Zippered chest pocket Trim fit keeps warmth close to the body and makes it easy to wear under mid and outer layers Previously the Rho AR Zip-Neck base layer top Polartec Power Stretch Pro 88% polyester 12% elastane Moisture Wicking" **Name implies heavyweight, but it is 11oz. 10253