Key Features: Stability - custom-made aluminium stabilising frame and harness that prevents side-to-side sway Ease of use - dry bag can be easily removed from the harness for easy access and packing Durable and waterproof - made of hard wearing 210D nylon with welded seams for superior durability and complete waterproofness Spares & repairs: replacement components for this product are available to order How To Mount: Hold TPU piece against the seat post, and fix the velcro strap Open the side compression straps, weave the upper straps through the saddle and fix by securing the buckles again After inserting the packed dry bag into the harness, fix the dry bag with the hooked central webbing strap. Double check the side straps are tightened for maximum stability. Fits a range of seatposts and saddle setups provided clearance is minimum 15cm from the frame Details: Custom aluminium rod frame for enhanced stability 10L waterproof removable dry bag (volume measured at three rolls) Bungee tie down on top of harness for quick kit storage or drying Air release valve for ease of dry bag compression Reflective details for visibility in the dark Carbon seatpost compatible Materials: MDry bag: 100% Nylon with PU and TPU coatingHarness Main Body: 100% Nylon with PU coating