The jacket has an exceptional fit and is comfortable to wear. The belt holds the jacket in place, therefore there’s no need for any other adjustment straps or elastic bands around the hind legs.
The comfort isn’t compromised even if the dog is on leash. The leash hole allows the collar to stay upright, covering the dog’s neck even while walking on lead. And since even the smallest details matter, the buckle is curved to prevent it from rubbing or pressing against the dog’s back.