Combine with Hook and Loop This bag is ROCKBROS newest bike frame bag, it is a combination of two packages. One is top tube bag, the other is frame bag. The bag is combined with hook and loop. You can make them in any position you like. Water-Resistant Material The bike bag is made of 400D nylon. The zipper is adapt the seamless technology with an orange cap. Excellent material support you can ride under the small rain. [WATER-RESISTANT] These bike bags are made of water-resistant material. Bike bags adopts sealed zipper, and the zipper on the top is also designed with a rain cap cover. Effectively prevent the water and dirt from entering. [LARGE SPACE] The size of smaller bag is 10.83*1.89*3.35in, the size of bigger bag is 11.42*1.89*5.12in. It is enough to put daily items such as cell phone, keys, wallet, tools kits, mini pump, glasses etc while riding. [SEPARABLE] This product consists of two bike triangle bags, which can be combined and split through hook and loop straps. Unlock more ways to use it. It is very convenient. [EASY INSTALLATION] 8 Hook and loop fasteners and 16 install holes around the bag. You can adjust the quantity and position of the straps according to your needs. Easy to install the bag without any tools. [MULTIFUNCTION] This combination bike bag can be used as a bike top tube bag, a bike frame bag and a bike seat bag. You can freely choose to install only one bike bag or both.