Differio Drawstring Gym Bag in 2 Designs. A Differio exclusive, our latest black drawstring gym bag for men features a playful, gay logo slogan for that in-your-face boldness. Gay drawstring backpack features a flat, foldable pack with double-corded shoulder straps, drawstring closure and faux-leather corners. Sporty sackpack designed with the signature Differio logo alongside white “STUD” or “WOOF” graphics. From the gym to the beach, our mens drawstring gym bag will easily hold all your essentials with its practical pull-cord straps. Available with Stud or Woof.