QUICK! HELP! Speedy 30 w/pic Y/N??

Nov 19, 2010
My cousin bought it for my mom but he didn't know there were different sizes. She wants the 25. We're about to return this for it butttttt I just tried it on and I like it. And it's big enough to hold my kids' diaper pouch. Do you think it looks too big on me? Should I keep it?