Inflatable Twin Swim Ring 1) Eco-friendly,non-irritating,safe 2) ... 9mm PVC tarpaulin 3) Cert:CE,EN71,SGS,En14960 Inflatable Twin Swim Ring 1. Popular two holes ring shape design, ... , easy to set up and take down. 2. Material with best 0.9mm PVC tarpaulin, durable, non-irritating, safe ... . The design infused mechanical system make it steady, so happy with safe, and more hole, more fun! 6. Other customized ...