Smelly Proof Baggie Black - Extra Small size, single The Black Smelly Proof Baggie has a super-strong, double locking seal and wide seams to any smells getting out from inside the bag, and guaranteeing you don’t give the game away. The Extra Small size bags are 3' x 4' of tough, anti-rip plastic featuring the Smelly Proof logo on a black background, keeping the contents hidden from prying eyes and keeping you under the radar.