About Size: Please don't choose the size based on your usual size measure your pet's chest girth first, then length, and select the right size using the size chart. If your pet is still growing or has a stout body, please size up. Warm and Breathable: Made of a special air-layer structure material, the fabric is soft and silky, effectively locking in body temperature while allowing air circulation to avoid stuffiness. Long-lasting and Elastic: Highly wear-resistant, not prone to wrinkling or deformation, with excellent elasticity for easy on/off for your dog, and not prone to pilling—machine washable. Sports and Daily: Designed for active pets! The hood has an adjustable drawstring and leash hole, suitable for outdoor sports or daily wear. Fashion and Comfort: It features soft heart-shaped embroidery, a long-sleeved design, and a loose fit, combining trendy street style with comfort.