Tough as iron, buttery soft and built to last, meet your new workhorse shirt. Designed and built in NYC.Shop Now
Underlying Proof is the deep-seated belief that form and function are not mutually exclusive. Products should be designed and built without any compromise on quality, utility or style. Using innovative technical fabrics and clean design, we make versatile garments for daily performance. Intelligently designed products that look good, feel great and let you transition seamlessly through an active life. Clothing without constraints.