I have a Zac speed CONFIGR8 chest protector/backpack/hydration pack for sale, pack/hydration used one time! It’s in mint condition, chest protector never used. No blemishes, scratches etc. all zippers and closures work properly. It is built to use with or without the chest protector by adding or removing shoulder straps. The pack is very stable, I used it on an off-road course and had no issues with flexibility, or freedom of movement, and had hydration and a small amount of storage. Please see description below, very well built and engineered, highly rated and reviewed as one of the top multi packs around.  Sprint R-3 Enduro Backpack by Zac-Speed The Sprint R-3 Enduro backpack by Zac Speed has been purposely designed for short fast competition rides with its minimal design and aggressive graphics, also the perfect backpack for motorcycle commuting. The Sprint R-3 is a fourth generation pack that adopts the new CONFIGR8 adaptive pack harness system. In keeping with tradition the Sprint is a low profile design to minimize lateral and vertical movement. To optimize comfort and stability in this moto backpack, we have used a vented TPR waist belt system with enhanced padding profiles for improved ventilation. A Source 3lt hydration system provides ample water storage whilst offering 3 individual compartments with two deep sidewall pockets for maximum flexibility. A wide aperture main compartment access allows for quick easy bladder installation. The Sprint R-3 Enduro Backpack by Zac Speed also comes with a removable pack shield to improve protection and maintain the ventilation structure of the pack. The back panel-padding uses a Bio-foam design for improved comfort and easy access to the pack ladder-lock system and pack shield compartment.  Includes backpack/hydration pack, and extra (brand new) shoulder straps and chest protector as part of the CONFIGR8 system.  YBS water resistant zips with rubberized all-weather pulls Molded EVA (bio-foam) back panelWe-Ship-Worldwide PU articulated pack shield insert Capacity 9.0 liter Removable waist belt and shoulder harness Four storage pockets CONFIGR8 ladder lock adjustment system (tool free) Source 3-liter hydration system Weight 3.3 lbs (with pack shield and hydration system) Weight 2.4 lbs (pack only) Length 17.7″ – width 13.7″