Foot warmer(S)-white by Shuai & Mei Daily Products (Qingdao) Co., Ltd.
Foot warmer has many names, such as, insole Warmers,Foot Warmers,Feet Warmers,Heated Socks.
What's foot warmer(S)-white?https://www.warmerproducer.com/a/products/foot/
The details are as follows:
Size: 250x75 mm or 230x70 mm
Weight : 72 g
Pack: 180 pairs/carton
Heating Last: 6 hours,
Average Temp: 38 C
Max Temp: 45 C
Material: Iron Powder, Water, Vermiculite, Activated Carbon and Salt.etc
Shelf Life: 3 years
Storage: Keep in dry, cool place and avoid direct sunlight
Its features: All natural ingredients
No batteries, no microwaves, no fuels