The Cartier Series panniers are a highly functional and durable cargo solution for commuting Heavy duty blend of 850D and 600D polyester for rugged longevity Spring loaded hooks immediately adjust from 8mm-16mm, without any need for tools while the lower Slidelock rails locks the pannier in place Lined canopy and back plate to protect gear 3M reflective strips and logo Shoulder strap included Hook and Rail 1507 c.i. (Pair) Black XXX-Large (700+ c.i.)