The topeak tri bag is an essential bike accessory for any commuter or for weekend leisurerecreational riders the saddle bag fits neatly onto the top tube of your bike and is the perfect size for storing those essential items that you may need whilst out riding such as a puncture repair kit and a small pump however the topeak tri bag isn39t your every day bicycle saddle bag because the quick release system removes the need for a pannier rack positioned for minimum wind resistance and easy