The temperature of the water is very important and is the thing which makes them reset, if it is not constantly boiling then they will fail to reset. Clear Round. Blue Round. Yellow Round. Green Round.
eBay
Refillable Hand Warmers Portable Body Heaters Pocket Warmer for Burner Easy to C
Aliexpress UK
These are great if you are out in the cold. They help to keep you warm, and are reusable so are. To reset to be reused is simple. This resets the chemical reaction and is ready to be reused. Each heat pad is 9cm wide.
eBay
Hands and Feet Mask Warmer Paraffin Wax Bath Heater Machine Moisturizing Hydrating Kit Hand Waxing Spa Smooth and Soft Skin Care
Aliexpress UK
These are great if you are out in the cold. They help to keep you warm, and are reusable so are. To reset to be reused is simple. This resets the chemical reaction and is ready to be reused.
eBay
1PC Ice Glove, Finger Thumb Ice Pack, Ice Gel Hand Wrap, Gel Ice Pack- Smoothing And Reusable
Aliexpress UK
Once it cools off from its boiling bath, it is ready to be used again. Best choice for cold winter, outdoor, camping. Wrap in cloth or keep in your pocket to prolong heat. Temperature will rise up to 55 degrees Celsius.
eBay
24K Gold Milk Honey Hand Care Masks Soothing Moisturizing Exfoliating Whitening Nourishing Hydrating Gel Hand Mask
Aliexpress UK
The temperature of the water is very important and is the thing which makes them reset, if it is not constantly boiling then they will fail to reset. Available in Yellow, Green, Red, Clear, Blue and Pink.
eBay
Honey Wax Hand Cream Moisturizing Whitening Exfoliating Smoothing Firming Nourishing Hydrating Gel 30g For Hands Mask
Aliexpress UK
Manufacturer: Lifesystems. Gel crystallises, releasing the heat. Release up to 45 minutes of heat. Heats to 54 degrees celsius. To reset, place in boiling water then leave to cool.
eBay
Ultra-thin Shawl Arm Sleeves Ice Silk Cooling Long Gloves Breathable Sun Protection Anti UV Hand Cover Warmer Outdoor Golf Sport
Aliexpress UK
Condition is New.
eBay
Ultra-thin Shawl Arm Sleeves Ice Silk Cooling Long Gloves Breathable Sun Protection Anti UV Hand Cover Warmer Outdoor Golf Sport
Aliexpress UK
Reusable, boil in a pan of boiling water for 10-15 minutes. Colour Blue Rectangle. Sport Cycling. Color Blue Rectangle. Item model number 1277723-2. Size One Size. Material composition 100% Polyester.
eBay
500ML Cute Soft Hot Water Bag Winter Warm Hand Warmer PVC Liner with Plush Cover Women Girls Hot Water Bottle Bag
Aliexpress UK