This is SharkSkin, an FK-exclusive creation and the next big thing in rubberwear!
This Open Back Brief is made of 100% silicone, which is stronger and stretchier than latex. Silicone is also easier to put on and take off, isn't damaged by body oils or oil-based lubes, and it's hypoallergenic.
SharkSkin features solid, single-piece construction, so there are no weak points like seams to come apart nor cut edges to tear. The Open Back Brief has a pouch in front to hold everything in place, but has no seat for full access.
This garment is currently available only in small/medium, which should fit waist sizes 28" to 34".