Matching accessory to the Equine Cooling Vest. Cooling Leg Wraps are made from Non-Toxic Materials. There is no oozing of fabric as with a PEF (Polymer Embedded Fabric).Choose the cooling technology without beads, crystals or gels when you want to feel safe that you and your horses are not being subjected to toxic materials. Activates in 5-15 minutes. Cools up to 6 hours.