People have sorrows and joys, and the sky has unpredictable storms. Even if you are a very careful person, you read the weather forecast before going out every time, but the weather forecast has false alarms. If there's a heavy rain, your backpack isn't waterproof, and you have a lot of delicate equipment like a camera in your bag, that's a very sad thing. So waterproof is also an indicator for choosing a cycling bag.

Many backpack fabrics are PU waterproof, but the weak links are stitching and zippers. Therefore, some backpacks also provide a rain cover, and those that do not provide can be purchased separately.Cycling backpacks need to have a comfortable carrying structure, good sweat wicking and breathable function, strong fabric, reliable zipper and fastener structure, in addition to waterproof, various accessories, fluorescent reflection and other functions are also a reference standard for selection.