🔥 Heated Underwarmer Shirt: Compression Baselayer with 8 Integrated Heat Packs for Maximum Body Warmth Review

100% Spandex. Pull On closure. (1) Single Use 10 Hour UnderWarmer unisex, heated compression fitted, base layer shirt. Compresses against your skin to keep your upper body warm. NO BATTERIES REQUIRED like most heated jackets, heated vests, and heated gloves. AIR ACTIVATED AND READY IN 30 MINUTES - 8 air activated heat packs mean that you’re ready for the cold at a moment’s notice. It’s the best way to stay warm with zero prep - no charging needed. Simply open the package, pull on the shirt, and feel the warmth (up to100°F/38°C) heating up your core. SEAL AND REUSE The UnderWarmer is essentially a single-use product. However, If only worn for a few hours, place it in an air tight bag and it will stop producing heat. Essentially going dormant. FEEL SNUG AND TOASTY - The UnderWarmer is a soft, lightweight compression shirt. So it feels really, really good. But most importantly, that snug fit means the warmth stays right where you need it - near your skin. (Make sure to use our detailed size chart and diagram to choose the best size to fit your upper body so you get the ultimate UnderWarmer experience.). PERFECT FOR COLD WEATHER You always thought that you had to choose between your favorite winter activity and staying warm. But no longer. Whether you're deer hunting, ice fishing, hiking or camping in the cold outdoors, the UnderWarmer heated shirt will make it a wonderfully warm experience and your must have hunting accessory. GREAT FOR FOOTBALL FANS- gift your tailgating spouses and buddies (or yourself!) with a way to enjoy cold weather football games AND stay warm for the whole day.