The float vest from Konges Sløjd is designed with both zipper and velcro closure. It is featured with a buckled safety crotch strap so that your child can never slip out of the vest. It is made of 80% neoprene and 20% polyester lining. WARNINGS:This is not a lifesaving device. Only to be used in water in which the child is within its depth. WILL NOT PROTECT AGAINST DROWNING. USE ONLY UNDER CONSTANT SUPERVISION. NOT FOR USE IN BOATING 1-2 years: weight range 11-15 kg/ H: 32 cm x B: 27,5 cm x L: 3,4 cm 2-3 years: weight range 15-19 kg/ H: 36 cm x B: 29 cm x L: 3,4 cm 3-6 years: weight range 19-30 kg/ H: 39 cm x B: 31cm x L: 3,4 cm