Instant 6in X 9 In Cold Pack W/Velcro Strap

The pack you're referring to is the same as MD1100, but it comes with an elastic Velcro strap to securely hold the pack in place during therapy. This strap provides added convenience and ensures that the pack stays in position for optimal effectiveness. The size of the pack with the Velcro strap is 6 in. x 9 in.. It offers the same benefits of being microwavable, reusable, and latex-free, providing both hot and cold therapy for comfort and relief.