Aluminum Armor Spine Protector Motorcycle Bike Riding Gear Large Bag Backpack 21"(H) x 12"(W) x 9-1/2"(D) 5 Strong Clips to Secure Backpack and Body. 2 Strong Zipper Compartments with 1 Interior Pocket to Maximum Stuffs You Can Take. Fit & Shape Back Padded, Ergonomic Shoulder Straps for Extra Comfort. 5 Pieces High Quality Aluminum Plate Spine Protection.