Timberwolf Extreme Wax Jacket for Dogs is a quality waxed cotton dog coat is designed for wet and cold weather protection. It is impregnated with a fine covering of wax, the cloth acts as a water barrier to keep the dog dry.For years wax jackets have protected their owners from the elements and for good reason. Measure the dogs back, from the base of the neck to the base of the tail as well as from the chest to the base of the tail, to find the size coat most suitable then select from the box below.Ancol coat sizes: Small up to 26 cm Neck-Tail. Chest-Tail up to 36cm, Medium up to 36 cm Neck-Tail. Chest-Tail up to 46 cm, Large up to 46 cm Neck-Tail. Chest-Tail up to 56 cm, Extra Large up to 56 cm Neck-Tail. Chest-Tail up to 66 cm, Extra Extra large up to 66 cm Neck-Tail. Chest-Tail 77 cm. To avoid disappointment do please ensure you select the correct option below – do err on the larger side – as refunds for returned coats can only be honoured if the coat is in perfect condition.