Drainable Pouch is best suited for colostomy and ileostomy stomas, and are best if you have discharge frequently throughout the day. They have a Lock 'n Roll closure or clamp, so emptying the pouch is quick and easy. A filter is another option if you have gas. The filter lets gas out but not the odor. It also minimizes gas build-up, so the pouch does not inflate like a balloon.
Closed Pouch is best suited for colostomy stomas and you can simply remove it and dispose of it. This type works best if your discharge is less frequent and your pouch needs to be emptied just one or two times a day. Closed pouches don’t have clamps and must be replaced to be emptied. Most Hollister closed pouches have a filter.