The ortlieb vario pannier is a flexible miracle of space that can be quickly converted from a convenient bike pannier into a comfortable backpack the waterproof vario is made of tear and abrasion resistant nylon fabric and features a handy roll closure it offers space for din a4 files and a 154rdquo laptop vario is available with ql3 or ql21 system for mounting to the rack the padded carrying system with shoulder straps and adjustable sternum strap can be easily stowed away in the front