1.HIGHQUALITY MATERIAL: The life jacket is made of elastic, soft neoprene fabric and contains highquality pearl cotton material, which is waterproof and moistureresistant, skinfriendly and breathable, comfortable to wear and r to use. Higher buoyancy, scratchresistant, scratchresistant, better loadbearing capacity. 2.RECOMMENDED SIZE: XS (20–30 kg), S (30–50 kg), M (45–60 kg), L (60–75 kg), XL (75–100 kg), 2XL (90–120 kg). Life jackets are functional products. It is recommended to use a suitable size. For outdoor sports such as swimming, diving, and motorboating, a closefitting size is recommended. For leisure activities such as sailing and fishing, a size larger is recommended. 3.HIDDEN POCKET DESIGN: The pocket on the back of the anticollision swimsuit is practical for storing personal items and can be stored in the pocket when the strap is not in use. The smooth edge strips around the life jacket make the overall appearance simple and elegant, more fashionable and beautiful. 4.DOUBLE STRAP ON THE BACK: The life jacket has two 3.8 cm wide, highquality straps on the back, which can be adjusted in tension, making it tighter to wear and r to use. WARNING: must be accompanied by their parents when using this life jacket.