PREMIUM MATERIAL: Our dog life vest is composed of high-density and abrasion-resistant polyester Oxford nylon outer layer and pearl cotton foam inner layer. Therefore, the high workmanship of dog life jacket can provide sufficient buoyancy, tear resistance, allows for quich drying and proper drainage. EASY TO WEAR & COMFORTABLE: These adjustable straps and quick-release buckles in the neck and belly of pet life jacket, it allows you to adjust the pet life jacket's size to the right position for maximum comfort and fast fit. The durable D-ring hook for dog leash for easy control of the dog’s safety. ENHANCED BUOYANCY & SECURITY: Our safety jacket for dogs filled with float foam that can provide enough buoyancy when your pet swimming without tired feeling greatly. The bright colors enhance maximum visibility when your furr babys swim under the water. For dogs 33-52 lbs, see chart in pics for measurements.