Whether your bike has toptube bolt bosses or not, the Arundel Top Tube Tycoon is a perfect bento-style semi structured bag with a perfect size and shape, with simple use and high-level water resistance. 40 cubic inches of storage can be easily and quick accessed with a zipper you can operate easily with one hand while you are riding in a safe situation.

The construction features durable, waterproof, lightweight materials and welded seams. The zipper is also a sealed system. The Top Tube Tycoon is nearly waterproof, but is considered water resistant, as any top- facing zipper must be so rated. A bright orange interior lining allows you to quickly identify items in the bag. Shape-wise, the semi-rectangular design is tapered for stability and reduced chance of knee/thigh interaction when pedaling. The bag can be mounted with velcro straps, which can be stored underneath when using the toptube braze-on mounts used on many gravel, triathlon and utility bike designs, even some mountain and recreational road bikes.