Product Measurements:- 51 x 46 cm 20.1 x 18.1 Inch Additional Info:- Sturdy pre-tested vinyl. Safety valves. 3 Air Chambers 2 Quick Release Adjustable Buckles Inflatable Collar Suitable For Children From 3 To 6 Years This is not a Lifesaving Device. Do not Leave Child Unattended While Device in Use.