Please make sure that you are comfortable in the water and are able to swim. You should be at least a bit physically fit. Also, you should not have a problem with wearing sometimes tight & constricting dry suit. Make sure that you have read, signed, and followed directions on the Silfra Snorkeling Medical Statement and also signed our liability release form at the start of the tour. You must be at minimum 145 cm (4’9) tall and maximum 200cm (6’7) tall. Your weight should be at minimum 45 kg (99 lbs) and maximum 120 kg (264 lbs). This activity is not suitable for pregnant women. You must be at least 14 years old to participate in this activity.