Price: $13.99
(as of Nov 02, 2025 17:42:23 UTC – Details)
Product description
Enjoy your winter activities like never before! The UnderWarmer heated shirt is convenient, super comfortable and best of all – it works really well. The UnderWarmer was specifically designed to be affordable and convenient for the everyday guy or gal spending a long day in the cold. That’s why UnderWarmer has some very specific features, like instant air activation (just take it out of the package) and compression fit (so you can feel every bit of heat pressed against your upper body,). For just a few bucks, you have a portable, wearable radiator, ready to go the moment you are. Unlike hand and foot warmers, which only help extremities that have already gotten cold, the UnderWarmer PREVENTS those extremities from ever getting cold. How? By keeping your core warm – because a cold body core is the cause of icy extremities. Best of all, unlike all those bulky coats and layers you’ve tried, the UnderWarmer is extremely lightweight and won’t slow you down.You CAN stay warm for the entire day, even in negative digits. Just grab your UnderWarmer!
Unisex-Compression Fitted For Maximum Heat- Feel snug and gently stimulated
The UnderWarmer is a soft, lightweight compression base-layer 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.
12 Long Lasting Hours- No Batteries Required
Unlike heated jackets that require batteries, the UnderWarmer requires no batteries and is ready to use when you are. Simply remove the UnderWarmer from its packaging. Upon opening, heat activation begins and will take approximately 30 minutes to reach its maximum temperature.
Use this size chart to correctly identify the right UnderWarmer for you.
X-Small: Youth 65 Pounds to 100 PoundsSmall Chest: 30-34 InchesMedium Chest: 35 – 39 InchesLarge Chest: 40 – 44 InchesX-Large: 45 – 49 Inches
Is Discontinued By Manufacturer : No
Package Dimensions : 11 x 10 x 1.5 inches
Department : womens
Date First Available : December 28, 2017
Manufacturer : UnderWarmer
ASIN : B078P8W197
Best Sellers Rank: #7,048 in Sports & Outdoors (See Top 100 in Sports & Outdoors) #16 in Men’s Hiking & Outdoor Recreation Vests #1,871 in Camping & Hiking Equipment
Customer Reviews: 4.4 4.4 out of 5 stars 534 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
Customers say
Customers find the heated vest shirt keeps them warm during cold football games and outdoor activities, with one mentioning it kept them toasty throughout the entire game. The vest works well, lasts all day, and customers consider it worth the money. They appreciate its comfort and fit, with one noting it’s not restrictive, though several mention it runs a bit small.
