Osprey Transporter Sling - Raven Black / BlackAn absolute godsend for the bike commuter, Ospreys Transporter Sling makes shuttling essentials to and fro a carefree task. The key detail here is the mesh covered, ridged Airscape back panel which prevents heat build up through consistent and reliable ventilation. Another adroit feature is the ambidextrous shoulder strap, allowing the style to be worn in the position you find most comfortable. Then theres the carbonate coated, water resistant