My site functions on desktop browsers fine. I serve my store through an iframe, and I thought at first it was the iframe causing the scrolling issues (the known issues with scrolling within a fixed div on iOS).
However, if you visit the direct link:
This page also won't scroll. I've scoured my css/html and there is no fixed positioning. I'm not sure what is causing this site not to scroll on mobile/tablet (I've been testing in iOS5 and 6) but it makes my store unusable on mobile/tablet which I'm trying to fix.