This disposable self-heating knee warmer has a butterfly shape which is suitable for our knee joints. And, the adhesive heating pad is used to keep the knee warm in cold weather.
1. Open the packaging bag.
2. Remove the sticker cover.
3. Stick the knee warmer patch on the clothes instead of the skin.
4. When the knee warmer becomes cold, cut the knee warmer pad, and dump the material into the flowerpot.
The heating duration of the knee warmer pad we are selling on the domestic market is 10 hours. And, the average temperature is 52℃, the highest temperature is 65℃. And, the shelf life is 3 years. We used a new type of back tape, so the knee warmer can stick for very long.
As a professional air-activated knee warmer factory, we can customize adhesive heating pads according to your requirements. Such as the temperature, heating duration, packaging bag and box.

Qingdao HongKing Maxwarm Co., Ltd. is your professional supplier of disposable hand warmer, body warmers, foot warmers, shipping warmers, and steam eye mask.
Hand Warmer | Body Warmer | Foot Warmer | Shipping Warmer | Steam Eye Mask
Email: sales12@hongking.ltd admin@maxwarm.cn
Whatsapp: +86-18561678575
Address: Building 22-2, No. 228, Luofushan Road, Huangdao District, Qingdao, Shandong Province, China, 266555