Diving with two cylinders used to be the sign of a hard-core technical diver but that’s old-school when nitrox was considered “technical.” RAID‘s new program encourages any diver to enjoy the comforting feeling of having “tonnes of gas.” Twinset Foundations (diving with doubles) is a totally new program is the RAID catalogue. It is RAID‘s answer to delivering formalized training for divers who want to learn the safe and responsible way to use this classic kit configuration for any type of diving. In effect, twinset foundations opens up diving with redundant gas to the whole diving community. Designed as a valuable standalone for anyone who wishes to understand and enjoy the benefits of extending their bottom time, having a second first stage ready to deliver gas, and learning how to plan their dives to take full advantage of these benefits. This course may also be combined with other RAID cou