Kiribai Ashi Hotton for Sleeping, Pack of 8, Set of 10 Brand new, unused. For those suffering from cold feet that prevent them from sleeping. Gently warms and promotes blood circulation. Warms by wrapping the toes. Expiration date: April 2026 ● These are warming sheets to be applied to the toes while sleeping. ● For those who suffer from cold feet so badly that they can't fall asleep. The warmth of approximately 45°C gently promotes blood circulation in the toes. ● The warming effect lasts for 6 hours.