I am selling thus Sidemount regulator system because after taking the class I realized that Sidemount is not my gig. The regulators were overhauled last Spring and were in 6 1 hour pool sessions and 6 Openwater freshwater dives this summer. One regulator has a 7 foot (long) hose and the other one has a 39” hose and necklace. This system was put together from my back up to my identical back mount system.