Shoulder Centric™ support panels encourage healthy posture Integrated Power Mesh panels support lower back & hips Proprietary 4D stretch compression soothes aches & pains Wicking, breathable, and anti-odor for life Gripper hem prevents ride-ups Full-length zipper for easy on/off Inside zipper protector ensures next-to-skin comfort Wear it under work shirts or workout clothes. On-the-go or on the couch. If you have back pain, you're not going to want to take this thing off. Feel the stress and tension melt away from the second you zip in. The Men's Full Back Support Short Sleeve Shirt combines the Posture Support panels of our Shoulder Support Shirt with the Power Mesh panels of our Lower Back Support Shirt—helping to ease muscle tension and promote healthy posture from shoulders to hips. Made with our proprietary 4D stretch compression fabric, this sleek and comfortable base layer soothes everyday aches and pains while wicking sweat and breathing well under outer layers. If you know back pain, you know exactly why this shirt is such a big deal. Our Copper Znergy® fabric technology provides permanent anti-odor benefits by preventing the growth of odor-causing microbes. Body: 86% polyester, 14% spandex Mesh: 75% nylon, 25% spandex Machine wash cold, permanent press cycle, wash with like colors, only non-chlorine bleach when needed, tumble dry low heat, cool iron only, do not use dryer sheets, do not use fabric softener