Versatile and Reusable Durable ice and heat packs provide soothing, therapeutic relief that can be used over and over again. Freezer and microwave-safe. Portable Pain Relief The gel packs are flat and flexible which makes them very easy to travel with. If you are on a long road trip, keep them in a cooler to use on your back, legs, neck, ankles, or feet, if you get fatigued while driving. Extremely Durable & Flexible Our gel ice packs are even flexible while cold! No more using those old, bulky plastic ice packs to target pain on your body. The flexible pack will easily contour to any part of your body for nearly instant pain relief. Made to last with double-sealed seams, reinforced outer stichting, and high-quality binding that prevents leaks and tears. Use Hot or Cold! You can use the Snow Tech Reusable Gel Pack cold or hot! Our proprietary gel works unbelievably well for both applications. Simply place in your freezer to get cold or in the microwave for a few seconds to get hot.