Quadloc LITE Harness System The Hydro 3 has our unique Quadloc harness system which has an adjustable back length and total arm freedom. This provides a level & fit / comfort not normally associated with hydration packs. Exit / entry to the harness is quick and easy via one push-button buckle with no need to re-adjust the harness straps each time. This, combined with a removable waist strap, provide an unequaled level of high speed stability. Hydrapak 3 litre reservoir included: * Reversible for easy clean/dry * Wide-fill (Velcro roll over) * Easyflo valve with shut-off mech * Insulated neoprene tube cover * Plug’N’Play : Disconnect tube from reservoir with a touch of a button. * Taste free multi-layer tube coating * FDA approved polyurethane * Lifetime warranty (reservoir, drink tube & bite valve) Fitting Instructions 1. Firstly, push the harness strap back into the pack, to release the harness-web tension. 2. Shorten or lengthen harness by moving slider on web (equal both sides). 3. Pull harness strap back out of pack, to tension harness web. 4. Put on pack and adjust fit as on a conventional harness. Do not over tighten - tidy loose ends - ends under elastic loops. Once set, the harness do not need to be re-adjusted each time as the pack ergonomics allow the harness to open wide for arm access. Hydro 3 has been designed specifically as an active riding pack with our unique Quadloc harness system. Providing a level of fit and comfort unequaled by any other hydration system. With a fully adjustable back-length and unrestricted underarm movement. Once set, the pack is exceptionally convenient to use, with none of the harness strap re-adjustment necessary on conventional harness systems. The adjustable back also allows the pack position to be moved up to allow large waist packs to be also worn. Hydro 3 can be worn with or without a waist strap - we recommend to use a waist strap for maximum stability, when carrying the full 3 litre (100 oz) water capacity. Optional Extras Include: Kube Pocket £12.50 Optional accessory pocket fits to Hydro 3's harness. * 0.5 litre capacity. * YKK water resistant zip. * High visibility front. * 10 Year guarantee. US-5 £25.00 The US-5 retro fits to Hydro 3 to increase capacity by 5 litres. 1. YKK water resistant zip pocket. 2. Coated-mesh pocket. US-5 simply attaches via the supplied twin compression straps to the 4 x web loops on the front of the Hydro pack. US-10 £35.00 The US-10 retro fits to Hydro 3 to increase capacity by 10 litres. 1. YKK water resistant zip pocket. 2. Coated-mesh pocket. Use the 2x ladderlock buckles on the sides of the Hydro pack, as the larger 10 litre pack benefits from added compression. It is not necessary to use the male buckles when the coated mesh pocket is on the front.