I have a Ergon 30L hydration pack/backpack for sale. Only used twice, it was a little bigger than I was expecting and I don't need a pack this large. Would be perfect for bikepacking or medium day hikes, as it has a neat ball joint suspension and sits away from your back and more on your hips. Does not include hydration bladder, but will accommodate a 100oz bladder. Excellent condition overall, plastic frame does have some cosmetic scratches but does not interfere with use. Nylon is pristine, and all zippers are weatherproof. Cost was $159 new, asking $50 obo.

Ergon’s BA3 30-liter Backpack takes over as your do-anything, go-anywhere day pack. Fill the BA3’s with bouldering tack, hiking gear, or school books—either way this backpack keeps your good safe with the help of multiple external pockets and super-durable Hypalon fabric. Ergon’s Flink ball joint suspension and Profax PP frame makes sore shoulders and a hips a thing of the past, so go ahead and load up the BA3 and get after it.