I opened it once and tried it on, wrapping it around my neck, but it was too tight for my thick neck, so I'm selling it. It's been opened but is unused. A neck and shoulder warmer that can be heated in the microwave. - Size: Neck size: 50cm - How to use: Can be heated in the microwave - Heating time: Warmth for 30 minutes - Power: Usable with 500W and 600W settings - Purpose: For neck and shoulders