Apidura Expedition Frame Pack Compact 3L The Expedition Frame Pack is designed for storing items within the main triangle, creating a lower centre of gravity and enabling more natural bike handling. This pack fastens securely to your top tube with velcro straps, resulting in an even, balanced storage pack for comfort during multi day trips. It can be combined with other frame bags for long trips or simply solo to store essentials on a daily commute. It is constructed from a lightweight fabric welded together to create a watertight seal and fitted with zippers and protected closures to keep your belongings secure. One cool feature is the battery lead/hydration hose port which allows for the charging of devices or staying hydrated. Materials The frame bag is cut from a three-layer laminate fabric that was developed specifically for Apidura. The material is lightweight, and is highly resistant to tears and abrasion. Welded at the seams, creating a watertight seal to ensure complete waterproofing. Care Hand wash, using a mild diluted soap if necessary. Afterwards, let the Frame bag air dry.Do not machine wash, machine dry, or iron.