The self-adhesive, extra-large warming pad in a perfect fit for the shoulder and neck area provides pleasant warmth for approx. 8 hours after opening the packaging. The warmer is equipped with an adhesive textile surface and should be stuck to the bottom layer of clothing (do not stick directly to the skin). Shelf life 06/26. Heat where you need it. Eight air-activated heating chambers provide soothing deep heat. Warmth where it simply does you good. The heat patch can be worn comfortably under clothing in everyday life. Warmth increases well-being.