I bought this for my two 5 year old girls Earlier this summer and made incredible leaps They Have in terms of being white comfortable in the water. First, the quality of this product is really good. My girls love to have it on Because It is Relatively comfortable (two straps) And They look cool Because The design is great. Also, Because of the end-shape They move really well in the water and force it to make 'em an attempt to stay afloat and to-have a better position in the water. If They get tired, we-have Taught 'em to lay on the back, qui helps. BUT, the first times, you really need to be in the water with 'em, as it DOES require more efforts by the child. HOWEVER, for me, this is a positive thing. All in all, a great product !!