Our weatherproof half frame bags transform the empty space in your frame into quick-access cargo capacity. The 3 sizes differ in small increments, so you can find the perfect match for your bike, and you can even print full-size pdfs to ensure a dialed fit ( small / med / large ). The sturdy foam structure protects both the contents and the frame, and the extra long straps can be trimmed or moved to adjust the mounting points. Heavy duty water-resistant zippers with zipper garages keep the contents dry and silence jangling zipper pulls during your ride. All three sizes are available in a range of ten different colors! Made in the USA Features: - Movable/removable strap attachments to avoid interference with other bags and accessories - Extra long velcro can be cut to length for a perfect fit - Foam padded perimeter structure (no sag - no rattle) - Heavy duty water resistant zippers on both sides - Zipper 'garages' to tuck the pull tabs into - Inside sleeve pocket on right side - Outside sleeve pocket on left side - Main body fabric - 1000D Cordura (PU coated back and DWR finish on front - weather resistant) *OR* ECOPAK EPLX600 (RUV laminated film backing and DWR finish on front - for double layer weatherproofing) - Liner fabric - 10 oz. vinyl coated polyester (weatherproof)