Longer Lasting Cool: Our reusable large ice packs are lined with premium medical-grade gel and feature high-molecular gel that stays cool longer, up to 30 minutes longer than standard gel ice packs. Effective Relief for All Pains: Our oversized ice packs provide effective pain relief for all parts of the body. Whether you need an ice pack for your shoulders, knees, hips, waist, thighs, arms, or back, our size (11"*14") ensures full coverage and immediate relief where you need it most. Reusable Multiple Times: Our reusable large injury ice packs are made with medical-grade gel and feature double-sealed seams, which are leakproof and durable, and the gel is not easy to leak. Whether you need relief for your knees, back, shoulders, hips, or neck pain, our professional-grade gel lining provides you with comfort and relief Hot and Cold Dual Therapy: Enjoy the soothing heat and refreshing coolness of the ice pack with advanced hot and cold technology. Use it as a hot or cold compress for targeted relief. Simply microwave for 30 seconds or freeze for two hours, these gel packs are reusable for effective pain relief anytime, anywhere. Trusted by Medical Professionals: World-Bio's Injury Ice Packs are trusted by medical professionals for effective pain relief. Whether you're recovering from surgery or relieving a tired athlete, World-Bio's Large Ice Packs are the answer.