The Stealth is an evolution on the well-known Majestic and Legend harness. It combines the stiffness of the BCF (Majestic X) with the non-water absorbing inner shell of the legend harness. Best of both worlds! The harness is built around the patented Bionic Core Frame (BCF), which is a semi rigid back support plate; it's unique composite material is very stiff yet it allows more flexibility than conventional hard-shells.