Swim vests can help your child stay afloat, thanks to a certain level of buoyancy, but still requires some semblance of skill on the wearer’s end. Most swim vests would need the child to be able to tread water until help arrived.   Swim vests are simple to use, they pull on like a waistcoat and zip up at the front. Vests come with 8 removable floats, which are positioned in the...