Material:Made of 1000D polyester material with waterproof PVC layer on both sides, this bike pannier is super stand wear and tear,as well as anti-tear, wear resistant and heat resisting, protecting your items perfectly 3 in 1 multifunctional bike rear pannier bag;（2 one side shoulder bags and 1 backpack）can be used independently,convenient for versatility Bike Pannier Bag Easy installation:Quick release system, easy to be fixed on rear seat trunk rack High capacity: 1 backpack:19.2in L*12in W*5.8in H.1 side shoulder bag:11.6in L*5.9in W*13.5in H; Fully expanded to hold more Removable Shoulder Strap for one side shoulder bag: There is an adjustable nylon shoulder strap in the package, with easy locks on both sides, the strap can be installed and removed effortless, and you can carry the bike pannier on the shoulder while not cycling › See more product details