Blu Rock Men's 2-Piece Lightweight Waffle-Knit Thermal Set The Blu Rock Men’s Thermal Set includes both a long-sleeve top and bottom made from a lightweight waffle-knit fabric for breathable warmth and flexibility. Crafted from a premium blend of 60% combed cotton, 39% polyester, and 1% spandex, this set offers all-day comfort with just the right amount of stretch. Designed with a regular fit, pull-on closure, and tag-free construction to reduce skin irritation. Smart odor control helps keep you fresh whether you're layering up for cold weather or staying active at the gym. Each set comes retail-ready in packaging with a hang hole, perfect for in-store display. Includes top and bottom Waffle-knit texture for added warmth and breathability Smart odor control technology Tag-free for reduced irritation Retail packaging with hang hole Material: 60% Combed Cotton / 39% Polyester / 1% Spandex Machine washable