The Topeak MidLoader Drybag frame bag builds its weather protection into the body itself, a TPU shell that carries gear through wet rides. A hidden weatherproof zipper sits under a flap cover, which adds weather resistance and keeps the bag's profile clean. What Our Gearhead(R) Experts Are Saying:"The strap zones let me slide the MidLoader along the tube until it clears my knees and my bottle. Its hook-and-loop straps wrap different top tube sizes, so the same bag moves between my bikes."