Ensure you always have a GelPak ready when your horse needs it. Use Hot or ColdGelPaks adhere to outer shell of the boot & stay pliable even out of the freezer Retain Intense Heat or Cold Easy to UsePlace in freezer until cold or in hot water for 20 minutes, apply to leg with easy on/off hook & loop closures One SizeSold as a pair Cold Therapy Application Procedure Place GelPaks in freezer for six hours before initial use. After use return to freezer immediately. Lay the GelPak flat & evenly disperse gel before placing on leg. Use elastic wrap to secure on the leg & provide desired amount of compression. Hot Therapy Application Procedure Place the GelPak in hot water, temperature 71C / 160F & maintain at this temperature for 20 minutes. Repeat Steps 2-3 from Cold Therapy Instructions.