|*Ideal for hot summer days. The gel pouches are removable and will automatically recharge after a short period of non-use. *To speed up the recharging process soak in ice water or freeze. *The harness can be machine washed, but the gel pouches must be removed before doing so. *Easy to fit with zip fastening. *To fit dogs measuring up to 56cm from back of the neck to the base of the tail.