Stay toasty warm in frosty cold conditions with Magic Layer. Made from clever TACTEL fibres, this thermal vest retains heat to keep you cosy and is so ultra-thin it's completely invisible under your clothes. TACTEL is a unique advanced fibre that's incredibly soft, light and breathable. It's 20% lighter than most fabrics and dries 8x faster than cotton. It’ll stretch to fit to your body so snugly you'll forget you're even wearing it!