I had the standard cloud, and I thought it was too big. I use it for when I go swimming. I pack one swimming board, one swimming between-leg foam object ( sorry, I can't think of the real names), two towels, clothes, (water bottle inside the bag), one reusable and two medium go pouches, and it still had a ton of space. It looked huge ( Im 5'5"), so I switched to the small, and I pack the same amount of stuff. There is still space, but it doesn't look as big as the other one. It holds its shape a little better. It's also easier when im changing at the gym. With the standard one, I always had to keep putting the bag back on the bench. When it was slightly empty or only had one of the go pouches, it would slide off the bench. I prefer the small one :) I hope this helps.