Fabric & production quality: uv production baby swim up products are made up of uv protective fabrics and will protect (only covered parts) your childrenfrom the dangerous effects of sun. Learning to swim will speed up for your children by using baby swim up floating swimsuits and your vacation will be more fun & safe. Foams can be easily detached from the suit and your children can move freely and comfortably after getting out of water. Foams are placed with caution will not be removed from the suit in water.Size length(cm)width(cm) kg cm system (cm). 1/2y 39 55 7-10 80-90 eur size 1/2y: l 39 w 55. 2/3y 40,75 60 10-17 90-110 eur size 2/3y: l 40,75 w 60. 3/4y 42,5 65 15-20 110-120 eur size 3/4y: l 42,5 w 65. 4/5y 44,25 70 20-25 120-130 eur size 4/5y: l 44,25 w 70.