Kinchō Kairo Attaka Don! Hareru Usugata Fit 20 Pieces Although it comes in a bag of 10, I will open the bag and put 20 pieces directly into the package to fit in Yu-Packet Post. ⚠️Caution⚠️ Expiration date: April 2026 Brand: Dainihon Jochugiku Color: Red Material: Plastic, iron powder, water, activated carbon, wood flour, salt Included components: Disposable body warmer Power source: No electricity required A body warmer that sticks to clothing and warms up just by opening the seal, lasting 12 hours. The contents do not shift, providing a soft and stable heating effect. The thin fit type does not take up much space. [Country of origin] Japan [Size] 13cm x 9.5cm.