Kowa Hokkairo Regular 30 Pieces X 4 Non-stick

For sports, leisure, keeping feet warm, etc. Easily keep you warm while commuting to work or school. This is a type of hot pack that does not stick to clothing. Dimensions/130mm x 95mm Materials/Iron powder, water, vermiculite, activated carbon, salts, water-absorbing resin Specifications/Non-stick type Recommended use period/4 years from manufacture For sports, leisure, keeping feet warm, etc. Easily keep you warm while commuting to work or school. This is a type of hot pack that does not stick to clothing. ●Dimensions/130mm x 95mm ●Materials/Iron powder, water, vermiculite, activated carbon, salts, water-absorbing resin ●Specifications/non-stick type ●Recommended expiry date/4 years from manufacture ●Maximum temperature/70℃ ●Average temperature/55℃ ●Duration time/24 hours (time to maintain temperature above 40℃) ●Unit (quantity)/1 set (30 pieces x 4) ●Manufacturer part number/28263×4 *Please apply in units of 1 set. *Low-temperature burns are burns that cause symptoms such as erythema and blisters when exposed to a heating element with a temperature higher than body temperature for a long time. Please be aware that low-temperature burns may occur without any noticeable symptoms.