XL Hot Cold Therapy Reusable Knee Gel Ice Pack Wrap Oversized flexible soft wrap specifically designed to cover knee joint and the area surrounding the knee cap Stays in place with sturdy Velcro straps for long-lasting comfort Adjustable 13 by 13 inch size ensures a great fit for small, medium, large and XL knees Variable temp gel pack is microwavable for heated thermal pain relief, cool when refrigerated and can be frozen for intense cold therapy Pack contains 50% more gel than competitor products for long lasting EXTREME temperatures