We have designed this ocean t-shirt for kids to comfortably discover the coastal seabed for over 45 minutes in waters >21°C. User comfort: 1.5 mm neoprene cover top of body & arms, to enjoy over 45 minutes at 21°C Easy dressing: Front zip offering a wide opening and an easier donning of the sleeves. Sun protection: UPF50 top with collar and long sleeves to protect the whole upper body. Freedom of movement: Flexible foam and lycra underarms to free up the arms' mobility.