The vest is really great. Our 3-year-old water rat can thus move more freely in the water as with water wings. In the water she slips through the strap between the legs only slightly up and it provides enough lift, so our little one sometimes can splash around in short, even though we do have to hold permanently. Of course, one must not let the little ones so still alone in the water. In our case, tune the size specifications, our mouse is one but with about 96 cm and 15 kg for even more delicate varieties.