BBB Cycling BSB-133 TrunkPackLarge storage compartment with protection foam inner lining Two side compartments with expanding pannier side pouches Four velcro straps to secure the bag to the rack, cannot move forwards or sideways Adjustable shoulder strap which can be removed Compatible with RainCover (BSB 97), to protect against rain and dirt Attributes Bag Attachment Velcro Bag Material Deniers Nylon Light Loop Yes Color Black Primary Color Black