Bought a handful of these for my gym class and the polyester holds up way better than the cheap cotton ones we had before. The 18 inch size fits a towel, shoes and a water bottle with room to spare, and the drawstring cinches tight so nothing spills out.
Olivia O.★★★★★
Got caught in a downpour walking to the gym and everything inside stayed bone dry, which I honestly wasn't expecting from a basic bag. The polyester feels tougher than the price suggests, and the 18 inch size swallows my shoes and a towel with room to spare.
Sebastian★★★★★
Got caught in a sudden downpour with my gym clothes in this bag and everything stayed bone-dry inside, the polyester really holds up. The 18 inch size fits a full change of clothes plus my sneakers with room to spare.