Equinavia Sval Cool Tendon BootsSval cool boot technology without ice or refrigeration The inner material becomes cold when water is applied Simply hold the boot under a hose or submerge in a bucket of water and in a few minutes the entire boot will be cool to the touch Boots stay cold for about 20 minutes Intended as a supplement to regular ice therapy or as a simple extra bit of care after a work out or on a hot day The Equinavia Sval Cool tendon Boots utilize advanced Sval cool