<p>This reusable hot and cold compress pack is made of water-absorbent polymer resin and composite cloth. It is designed for multi-body part use, including legs, knees, arms, back, and shoulders, offering whole-body cold and heat therapy solutions. The pack features a self-absorbing polymer resin cloth cover that ships dry and absorbs water instantly upon soaking. It can be used as a hot compress by microwaving for 2-3 minutes or as a cold compress by refrigerating for 1-2 hours. The pack is environmentally friendly, using biodegradable polymer resin inside and specialized composite fabric outside. It is fully reusable and can absorb water again after water evaporation, extending its lifespan and minimizing waste.</p>