SwimFin is fun a water toy and flotation device all in one. SwimFin inspires imagination and play. When a child puts on a SwimFin, they immediately become more active, playing, building confidence, learning, experimenting and having FUN! SwimFin plays a psychological part in learning to swim, even before a lesson has started. Kids love the feeling of safety and security SwimFin gives them, while it motivates and encourages imagination and play.How to wear SwimfinSwimFin should be worn high on the back, above the centre of gravity. This way it will suspend the child in the water.SwimFin will not tip a child forward if worn correctly, as can be seen in the photos.SwimFin should never be used with a baby that cannot control their body yet.SwimFin must NEVER be worn on the front of the body.To be used under constant, capable supervision.SwimFin has been tried and tested and is proven to work for all ages, sizes and abilities. However, the packaging there is a chart saying SwimFin is suitable for children 15-30 kgs and gives an approximate age range of 3 – 6 years. This is how SwimFin works:The more submerged SwimFin is, the more support it is giving. Remember, the more visible it is, the less it’s working.This means when the child is vertical, doggy paddling through the water, SwimFin will be almost completely submerged, giving maximum support. As the child’s body position becomes more horizontal, SwimFin comes out of the water giving less support. This means the child is swimming more for themselves with less and less assistance. And Swimfin never has to be inflated, deflated, or need to have additional support added or removed as with armbands/discs, body vests etc.