UnderWarmer Heated Compression Sleeveless Camping Base Layer

850008-850008482004

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.
Sizing:

• Small Chest: 30 – 34 inches
• Medium Chest: 35- 39 inches
• Large Chest: 40 – 44 inches
• X-Large Chest: 45 – 49 inches
• Weight: 1 lb
• Dimensions: 10.5" x 9.5" x 1.5"