Designed by a Ph.D. to fit securely, ice effectively and last for hours when rolled up. You now can ice anywhere you go, after softball, soccer or basketball or even after the gym. Simply keep in freezer and take with you to the gym. Take it with you: Injuries happen anywhere, anytime. With Ice AidTM, you can take pain relieving ice cold therapy with you. The self insulating Roll-n-go design allows you to freeze the product and take it with you in your backpack or bag and it will stay cold for 4-6 hours. Total Flexible Mobility: Unique separated velcro placement allows neoprene to stretch and always fasten securely. No need to stay still or hold in place- Stays secure, even while walking. Extra strength velcro and separations allow for a snug fit that will stay in place even if you don"t. Large size for back, knee, and shoulder pains. Also great for shin splints and general aches. Adjusts from 0" to 20 in diameter fitting both children & adults. Great to have on hand "just in case" for children"s sports like soccer, basketball and baseball.. Icing Area is 15" x 4" high. Total length of wrap is 20" including the 4" wide elastic strap. Velcro areas are 2" x 2" for easy attachment Ice Mat made proudly by Icy Cools in the USA. No drips and no mess. Simply freeze and use.