I regularly visit the gym and transported following utensils without stopper to:
Sport shoes size. 46, sports pants, sport shirt, flip-flops, shampoo 400ml, 400ml shower gel, body lotion 500ml, sauna sheets 200x80, 130x70 towel, towel 100x50, Bottle (Tupperware 750 ml), sometimes even a bathrobe Gr. XL. Even accessories such as heart rate monitor, the MP3 player, mobile phone and small things such as brush, cell phone Glasses, Pack pace and your wallet still have space.
Although in some other reviews, the narrowness of the bag there is criticism with me is still air. For this purpose, however, to say that I also neatly stow my stuff and not into pot carelessly.
Also on the carrier from the bike the bag can be transported great.
What you can complain to the bag, that's the risers are different lengths, so that you are wearing has something flip side. Also, the zipper of the main compartment sometimes hooked something. It may be that he is still new and needs to be broken in.