• Add removable tail, Prevent baby from flipping backward. 
• Upgraded safety buckle, The Upgraded safety buckle provides 5 support points and a perfect 40°angle to keep a balance to avoid baby flip over and fall off.
• Upgraded into 2 swim ways which are backstroke and breaststroke with different buckle method. 
• Backstroke Suitable for 3~6months baby, breaststroke Suitable for 3~24months baby.