GOOD STORAGE - This bike bag is big enough to hold most of your tools and necessary items, and small enough to sit under the frame of your bike! Spacious storage pocket to hold your phone, earphones and money clip, while the side mesh pocket fits your keys, snacks, nutrition, and more. SLIM & LIGHTWEIGHT - This bike pouch with slim body design, the install position of under bike top tube effectively help to minimize the wind resistance, and prevent legs hitting during riding. The weight of the bag is less than 5oz, ideal for long cycling trip. EASY INSTALLATION - 3 wide adjustable magic straps provide stable and firm installation, durable big zippered opening mouth design for easy access, Universal angle to fit most bikes' triangle frames, and it won't encroach on your water bottle on your bicycle frame. WATER-RESISTANT & DURABLE - This bike triangle frame bag is made of upgraded polyester fabric, water-resistant strong helps protect stored items and easy to clean by wiping the surface. WITH HOLDER FOR BOTTLE or SPEAKER - We upgrade the bicycle triangle frame bag with a water bottle holder, it supports most of the water bottles. And we can also put other things inside this holder like mini speakers, bike tools etc. Bike Triangle Frame Bag with Bottle / Mini Speaker Holder - Bicycle Cycling Storage Triangle Top Tube Front Pouch Saddle Bag for Road and Mountain Bikes