This is a protective cover for a backpack that will keep your backpack from getting wet when you&#39;re outdoors and will better protects your backpack and the contents of your backpack.<br/>Features:<br />Reflective straps design: There is a large reflective strips attached on the back of this backpack cover to offer visibility for the drivers at night.<br />The elastic rims can control the size of the rain cover, making it attaches firmly on your backpack.<br />Perfectly suitable for hiking, camping, cycling, fishing and other outdoor activities.<br />You don&#39;t have to worry that your backpack cover blowing away in strong winds.<br />Portable and small after folded, easy to carry.<br />Prevents rain and dust.<br/>Specifications:<br />Type: S,L (optional)<br />S: capacity: 7.5-18L<br />L: capacity: 16-33L<br />Color: black<br />Material: polyester<br />Package size: 180 * 100 * 90mm / 7.1 * 3.9 * 3.5in<br />Package weight: 68g / 2.4ounce<br/>Packing List:<br />1 * Bag Rain Cover