Rockbros waterproof bike top tube bag waterproof:the bike bag is made of 600d polyester, with double airtight zipper. It will survive from the downpour easy to install:come with 5 adhesive strip, so the bike frame bag will be mounted on top tube, under top tube or on the down tube sturdily slim shape:with narrow shark shape,and build in one piece of pp keel. The bike frame bag will not rub against your legs large capacity:this bike top tube bag has 1.5L large classified space, it is able to carry the long pump,repair kits, cellphone, keys and so on products details capacity: 1.5L material: 600d polyester weight: about 160g size: 43*9*6cm waterproof level: waterproof fits bike type: road bike, mountain bike, city bike the top tube length needs over 45 cm large capacity: the length of this bike triangle bag could reach 43cm, which means it has the large space to carry the long pump. About 1.5L classified capacity, one side for little stuff ,like your id card,cash, keys. You could put your cellphone,bike light, ,and repair tools on the other side waterproof design: with seamless welding technology, airtight zippers and fully waterproof material, this under top tube bag is able to survive from the heavy rain storm. Forget the weather,just enjoy your cycling trip two sides zippers: this bike bag contains the durable airtight zippers on two sides. The zipper with a smooth pull function comprises a zipper body, plus the zipper string , you could easily to take bike accessories o...