This kind of hot and cold packs have good performance therapy for pain, tension, body aches, swelling and bruises with nice appearance. This innovative gel beads can provide long-lasting cold relief and massage to your body. Furthermore, this pack with colorful beads and form-fitting shape could provide smooth feeling. The inner gel beads can be produced in different colors, which shows consumers pleasure visual effect. Also we could use PVC material as one side, and flush fabric as another side. Special wrap design can make people more comfortable, and product more fit.