Mary likes practising surfing with a . When you go down the river in a boat, wear an . In summer we usually go snorkelling and put on to move quickly under the water. To try bungee jumping you need a strong . While ice climbing, take an . Cycling can be dangerous, wear a , please. When you go up the snowy mountain, wear with . A is a costume that helps you move freely in the water. protect your hands from cuts and scratches.