Thank you for viewing! This is a handmade item. It may be imperfect, but I would appreciate it if you could purchase it with understanding. This is a slightly larger size of an adzuki bean heat pack. The cover can be microwaved. The cover is washable (hand wash or use a laundry net). Heat in the microwave for 40-90 seconds and apply to the area you want to warm. *It may get too hot, so start with a shorter time and heat in 10-second increments if needed. This size can be used as a large eye pillow, or to warm large areas such as the abdomen, back, shoulders, and neck. Also great for warming your feet before bed! Large Size Size: Cover 24.5 x 15.5 cm Inner bag 23 x 14 cm Materials: Cover: Cotton linen (Lining: Cotton) Inner bag: Cotton Adzuki bean amount: Approximately 280-300 grams (Hokkaido-grown) *Contains lavender *This fabric has nep and cotton waste *Size may vary slightly Apply to areas where you want to promote blood circulation, such as around the eyes, neck, shoulders, lower back, sacrum, abdomen, and soles of the feet. The gentle warmth of the adzuki beans will soothe your fatigue. Can be used repeatedly about 200 times, but do not use continuously. Please allow more than 4 hours for the adzuki beans to regain moisture before use. If it takes longer to heat up or the heat retention time becomes shorter, it's time to replace the adzuki beans.