Product specification? Material: environmentally friendly PVC Main Color: Blue Net weight: S: 450g; M: 500g; L: 550g Suitable age: S: 3-7months M: 5-18months L: 1.5-3years old size: S: inner diameter 15cm, outer diameter 46cm M: inner diameter 16cm, outer diameter 49cm L: inner diameter 19cm, outer diameter 57cm Features: ? Eco-Environmental PVC Materials ? Dual airbags, sounding bells ? Armpit 40°,is easier for baby to learn swimming ? Soft sponge chest support part ?Soft cushion support for secure baby's bottom to prevent sliding out or flipping backwards ? Anti-leak air valve, independent air pockets ? Special two wings design enhance baby's swimming Note: 1.The baby swim ring is not life-saving device, it can be used in shallow water and should be under the supervision of adults. 2.Due to the production process, maybe there is some smells, it will be disappear in a few days. 3.Wait 15 minutes after inflation, please ensure no leakage before use. 4.To prevent excessive expansion, please control the inflation saturation of about 90%. Special remind? When the temperature is less than 8? in winter,please use the heater to soften the product for 2-3 hours before use and prolong the service life of the product. Package included: 1xSwimming Float Ring 1xInstruction book 1xManual Pump