Altura urban 20 pannier single is a snazzy coloured pannier constructed of two layers for continuous use altura lead the market with their dryline waterproof layer and the cordura outer making this pannier durable for constant commuting easy and adjustable rixen kaul klick fix pressure system clips make for easy transportation on and off the bike additional hi viz reflective trim means you will be seen in the traffic 21 litre capacity single durable p tec fabric with padded construct