Personally i like some of the logo's etc but the actual clothing looks bog standard. Just an average hoodie, t-shirt etc with a decent logo or motif which are ten a penny. Nothing setting it apart.
If i was you i would find which logo/motif is the most popular then design some impressive new whole t-shirt design, or hoodie with some funky feature.
Good luck to you though.
p.s. I like the website. Probably because theres not loads of sponsors.