eoGEAR Tri Bag / Black This bag is VERY SMALL! This Made-in-USA top tube bag will attach to nearly any bicycle: road, mountain, urban, gravel grinder, cross, tandem** or recumbent.** MAIN COMPARTMENTToo small for smart phones but will hold many flip phones. The main compartment is sized to hold our exclusive fuel container (# 2320)  no more messy food in your jersey pockets. This zipper can be operated with one hand. It is large enough for a tube, tire levers & a CO2 injector. ONSTRUCTIONThe exterior of the bag is constructed of rugged 400-denier Nylon Pack cloth or 420-denier Ripstop Nylon fabric (with a water-repellent coating on the inside of the fabric  we dont use cheap polyester fabrics like some imported bags). WARNINGSome cyclists do not like having a bag on the top tube as it may interfere with their knees while standing up to pedal.