SwimWays Sea Squirts Swim Assist, Size Large & Pink Graduated swim training vest for kids with a back fin that is fun to wear! 4 flotation pads inside the vest allow you to customize the support your child needs Simply remove the pads to gradually ease your child forward into a proper swimming position Back fin folds back so your child can sit comfortably Recommended for ages 6-10, with a 24-26" chest measurement