Detachable waterproof rain cover. Laptop compatible up to 15.6"". Padded adjustable shoulder straps. Adjustable waist and chest straps. Ergonomic breathable padded mesh back panel. Hydration bladder compatible. Trekking pole attachment points. Compression straps. Elasticated mesh side pockets. Zippered side pocket. Internal mesh pocket. Reflective accents. Back light attachment loop. Grab handle. TearAway label. Matching styles QX510 and QX530.