IREENUO Kids Wetsuit Neoprene 2.5mm Thick Long Sleeve One Piece UV Protection Sun Protection Sunsuit Wetsuit for Girls Boys MATERIAL: Made By 2.5mm Neoprene, Keep Child Warm,Prevent Body Against Reef Injuries Abrasion and Jellyfish Stings. ADVANTAGE: Slows body temperature loss from water exposure to defend against hypothermia when swimming or diving. KIDS WETSUIT ZIPPER DESIGN: Zipper in the back of full suits is easy to take on and off. Protective cover on the inside keeps zipper off of child's skin. KIDS DIVING SUIT FEATURES: Breathable, comfortable, durable and soft on the skin. Full body coverage protects kids from the Sun's harmful UV Rays. UPF 50+ Sun Protection. NOTICE: Sizing chart included in Product Pictures. Please measure your child as shown in the chart and select the appropriate size for them. Disclaimer: measurements may have 1-3cm (0.39-1.18inch) inaccuracy due to the properties of the material.