Converts with ease. PANNIER Place backpack straps in the back pocket and fold the top flap inside. Place on the rack - red latch secures pannier to rack. Clip the lower strap to the side of the rack for extra security. Fits all standard and oversized racks 6 - 16mm. BACKPACK Pull backpack straps out of back pocket. Zip away the mounting system and clip backpack straps into lower strap buckles. Packed with features that will keep you moving forward. Alpha Pannier Backpack SMART Make smooth and seamless transitions throughout your day with this stylish, multi-function bag that is as versatile as you are. Forget compromising to make everything fit, next time leave nothing behind. This convertible bag goes from pannier to backpack in seconds with smartly placed pockets and stash-away compartments that make your ride a whole lot easier. SUSTAINABLE & WEATHERPROOF 100% recycled Ripstop fabric. PADDED TECH POCKET with Joey T3 Console compatibility. REFLECTIVE & VISIBLE labels and loops for additional lights ORGANIZATIONAL POCKETS include Internal 2nd laptop sleeve, pen slots, accessory pockets and key clip. Read more Alpha Pannier Backpack SMART Pannier Backpack LITE Pannier Backpack PLUS Commute Backpack Pannier Duffel Bag Pannier ✓ ✓ ✓ ✓ Backpack ✓ ✓ ✓ ✓ Removable Shoulder Strap Padded Laptop Pocket 15.6 inch 15.6 inch 15.6 inch 15.6 inch Separate Zipper Access to Laptop Compartment ✓ ✓ ✓ Reflectivity Reflective hits and loop for light Reflective hits and loop for light Reflective hits and loop for light Reflective hits and loop for light Loop for light Modular Attachment System ✓ ✓ ✓ Include Neon Raincover ✓ ✓ ✓ ✓ ✓ Dimensions 13" x 18" x 7" inch 12.5" x 18" x 6" inch 14" x 19" x 8" inch 14" x 21" x 10" inch 21" x 10.6" x 12.4" inch Volume 25 Liters 22 Liters 30 Liters 26 Liters 35 Liters Weight 3.7 lbs 2.8 lbs 3.2 lbs 2.48 2.7 lbs