Thank you for viewing! I started making these after seeing them used in an obstetrics and gynecology clinic. They were used to warm the mammary glands by placing them on the chest, warm the area around the uterus, and warm the eyes of sleep-deprived new mothers. The moderate weight is comfortable, and I fall asleep immediately. They also make a great gift. Heat in a 500W microwave for about 20-30 seconds, then adjust to your preferred temperature. The warmth lasts for about 20 minutes. For sleepless nights... For tired eyes from smartphones... I listen to YouTube while placing it on my eyes, or I put it on the back of my neck on cold nights and fall asleep. Made with 110g of Hokkaido-grown adzuki beans and a pinch of coarse salt. A little rosemary from the garden is added. The scent is like taking a forest bath and is very soothing. Can be used up to 200 times. Please be careful of burns from overheating. If using consecutively, allow to cool down first. Size (when in the cover) Width: Approximately 8.5 cm Length: Approximately 19 cm Please refrain from purchasing if you are overly concerned about details. Please understand that these are handmade. If you purchase 2 or more, the price will be 450 yen each. Due to rising material costs, I cannot offer any further discounts. I apologize.