IRIS USA Hand Warmers Disposable Up to 18 Hours of Heat

These IRIS USA hand warmers are air-activated and unscented, warming up in as little as 15 minutes once you open the pack and shake it. The Regular size measures 3.7" x 2.7" x 0.1" and holds heat for up to 10 hours, while the Large size runs up to 18 hours, so a single warmer can cover a full day of skiing, hunting, hiking, or winter commuting.

Each warmer is made from iron powder, water, vermiculite, activated charcoal, salt, and high water absorption resin, and is safe to dispose of after use in line with local regulations. The travel-sized pouches are TSA-approved for flights and carry an estimated shelf life of 4 years from the production date, keeping them ready for winter emergency kits and outdoor events.

Key Features

Brand	IRIS USA
Product Type	Hand Warmers
Model Number	586994
Manufacturer	IRIS USA, Inc.
Power Source	Air Activated Chemical Reaction
Reusability	Single Use
Scent	Unscented
Material	Nylon
Color	White
Size	Regular
Dimensions	3.7" x 2.7" x 0.1"
Item Weight	0.8 oz
Upper Temperature Rating	160 °F
Lower Temperature Rating	136 °F
Heat Duration	Up to 10 hours (Regular); up to 18 hours (Large)
Warm-Up Time	15 minutes
Shelf Life	4 years from production date
Target Body Part	Hands, Feet
Recommended Uses	Camping, Emergency Kit, Outdoor, Skiing
Country of Origin	Japan

Highlights

• LONG-LASTING HEAT: These pocket warmers are air-activated, unscented, and ready to use. Maximum temperature: 160°F (71°C); average temperature: 136°F (58°C).
• OPEN AND GO: Simply open individual hand warmer package and shake. Reaches max temperature in 15-30 minutes. No batteries, no charging, works anywhere. If the temperature begins to decrease, expose warmer to air and shake.
• OUTDOOR: Perfect for skiing, snowboarding, hunting, construction work, outdoor sports, and winter commuting, these hand warmer packs help keep your hands warm
• SAFE & NATURAL: Handwarmers are made with iron powder, water, vermiculite, activated charcoal, salt, and high water absorption resin. Odorless, non-toxic, eco-friendly disposal. TSA-approved for flights.
• WARMER SIZE: 3.7" x 2.7" x 0.1"

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Materials & care

Made with iron powder, water, vermiculite, activated charcoal, salt, and high water absorption resin. Do not place the warmer directly on your skin; wear it over clothing or in a pocket. Dispose of it after use according to local regulations.

How to use

Open the package and remove the warmer. Gently shake the warmer and place it over clothes or in a pocket. If the temperature decreases during use, gently massage the pouch.

Ingredients

iron powder, water, vermiculite, activated charcoal, salt, and high water absorption resin

Frequently asked questions How long does an IRIS USA hand warmer stay warm? The Regular size provides heat for up to 10 hours and the Large size for up to 18 hours. What is the maximum temperature of the warmer? The Regular size reaches a maximum of 160 °F (71 °C) with an average of 136 °F (58 °C); the Large size reaches 165 °F (74 °C) with an average of 142 °F (61 °C). Can I take these hand warmers on a plane? Yes, the travel-sized warmers are TSA-approved for flights. How should I dispose of a warmer after use? Dispose of the single-use warmer in compliance with your local regulations.