Epic offroad bike tours require you to bring all the essential tools and gear to keep from being stranded in the middle of nowhere. Designed to employ the unused space in your frame, MidLoader carries the heaviest items for your bike adventure. Constructed of lightweight, highly water-resistant and durable materials, it mounts and removes quickly with hook-and-loop fasteners. Two water-resistant zippered openings provide easy access to all your gear from either side. - Material: Polyethylene / nylon lightweight, durable, water repellent and stain resistant - Bag Attachment: Hook-and-loop fastener - Top Tube Diameter: Fits 45 - 66mm - Down Tube Diameter: Fits 38 - 70mm - Seat Tube Diameter: Fits 28 - 60mm Size - 3L: 37.5 x 12 x 6cm / 14.8" x 4.7" x 2.4" - 4.5L: 46 x 12 x 6cm / 18.1" x 4.7" x 2.4" - 6L: 54.5 x 13.5 x 6cm / 21.5" x 5.3" x 2.4" Weight - 3L: 277g / 9.77oz - 4.5L: 292g / 10.30oz - 6L: 337g / 11.89oz