The Contour™ is designed for divers who demand a high lift capacity for use with large steel tanks and multiple stages. 50 pounds of lift make it ideal for multi-tank dives. The unit is adjustable for people who are 5'5" and taller.
The Contour™ S is designed for smaller cylinders and divers with a smaller frame. 38 pounds of lift make it ideal for Aluminum 80s and small steel tanks like LP 85s. The Contour™ S can be adjusted for divers 5' to 6'+.