With its clever design enabling it to be used as a pannier and backpack, the ACID Flip Pro 25 is a one-bag solution for commuters and anyone needing to carry their belongings on their bike. Made from hard-wearing TPU fabric and boasting a capacity of 25 litres, the reversible cover can be quickly and easily flipped from one side to the other, depending on whether the SMLink 2.0 pannier mounting system or NF Ergonomics back system is in use. There's also a 15in laptop compartment inside, a side mesh pocket, compression straps and zipped side access to the main compartment.