Ortlieb Bike Packing Toptube Frame Pack - 4LPack It Up Top Toptube bags make use of the space in your frame's main triangle so you can carry extra essentials with you. The Ortlieb Toptube Frame-Pack is the smart solution for all who want to use their frame's main triangle for storage space without having to do without their water bottle. Waterproof to IP67 standard (with a fully closed zipper) means your gear stays dry in the worst conditions- even during river crossings. Features Waterproof fabric, seams, and zipper to IP67 standards Attaches to the top tube and seat tube with Velcro straps Dimensions: 19. 6" L x 5. 9" H x 2" W | Ortlieb | Bike Packing Toptube Frame Pack - 4L Black