Safety: The inflatable swimming ring is non-toxic and is a perfect tool for learning to swim. It can be perfectly adapted to the natural shape of the arm. 
Super comfortable
Package:  2 rings with 22.35x19.36 cm (8.8x7.7 inch) size and 105g / 3oz weight. It can keep people with a max weight of 25 above water.
Material: heavy duty thick PVC