8 x 11 Each * Simply store the pack in the freezer and apply as needed for cold therapy * For heat applications  place the pack in boiling water for 10 minutes  or immerse in water before placing in the microwave on full power for two minutes * Maintains temperature for up to 30 minutes * Safe  non-toxic  non-caustic *  Shipping Carton Size: 9 L x 7 W x 5 H