The UnderWarmer® is a single-use, compression fitted base-layer shirt. 8 HEAT PACKS are built-in and will activate within minutes of removing from its packaging. When ready to use, simply remove The UnderWarmer® from its packaging. Upon opening, heat activation begins and will take approximately 30 minutes to reach its maximum temperature of over 100f/38c.
The UnderWarmer® Heated Compression Shirt
$9.99 – $14.99
|Dimensions||10.5 × 9.5 × 1.5 in|
Large, Medium, Small, XL, Youth