Slipstream jump suits are sewn by Para-Phernalia and retailed by Para-Gear. They are generic belly-flying, relative-work, bumper-suits with grippers and a bit of Spandex across the back ... good for medium-build skydivers. Good quality workmanship and materials.
I'm going to bump this just for New People .. Like me. Slipstream II suits run small. I'm 5' 10 180 pounds and from my shoulders to my groin is a little on the short side .. I bought one for my wife and she would not fit in the suggested size suit. The suit she needed says it will fit a person up to 155 pounds .. I dare you to tell my wife she weighs 155 pounds .. If you are on the upper 1/3 of the size chart go to the next size. I'm lucky .. my wife can sew anything .. She's fixing mine ... JUST FYI.