The Master Blaster is the headline water slide at the Alton Towers Water Park, and sees guests boarding rubber rings before traversing its 208 metre circuit. Unusually for a water slide, guests are propelled upwards in some sections by powerful jets, with the final section being a more traditional downhill slide. Double rings are available (but a maximum weight limit of 21 stone applies) and kids must be at least 1.1 metres tall to ride.