This swimming vest provides good buoyancy for children 2-7 years old (33-55 lbs), helping them float stably while learning to swim or playing in pools, beaches, and water parks. It features a secure double-lock system with two buckles that are easy for adults to open but difficult for children, keeping the vest fastened tight and balanced. The adjustable strap and U-shaped front prevent neck irritation, while elastic sleeves adapt to various arm sizes for a snug, comfortable fit during active water play. Made of durable fabric with Epe foam inside, all stress points are reinforced to withstand splashing and movement. The bright colors make it ideal for pool, beach, or boat activities. weight: 0.53 pounds.