Relieves aches, promotes relaxation, and improves sleep. Encased in a breathable bag, it conforms to your body shape, providing targeted relief to muscles and joints. The pillow absorbs heat for up to 30 minutes to alleviate soreness and promote muscle relaxation, while a chilled pillow is ideal for post-workout use. It absorbs moisture and eliminates odors. Microwave (30-50 seconds only) or oven heat the pillow (on the lowest setting for 10-15 minutes!). You may also freeze it for a cold experience.