U Floats but designed to fit quite differently. 
Sitting higher up, utilizing your shoulder straps, and sits behind your head attaching to both the top of your frame and shoulder straps. Giving you floatation where it matters most, behind your head.
 
Think of it as a hybrid between frame attachment only designs and our 2 piece shoulder strap design. Along with this, it's minimally intrusive on weight shift frames.
 
Dual inflation system
Split / sealed bladder design
New bladder material
Works w/weight shift or fixed arms
Super nuts
Double overlock stitching