MaterialThree layers fabric outer layer of water resistant polyester wear and scratch resistant Middle layer is made of pearl cotton for shock absorption Inner layer is made of aluminum foil which has the function of heat preservation and cold insulation Lightweight95g it has a capacity of 12L and hold a bottle with diameter of 9cm 3 point and 5 grid fixation Three velcro straps are used for installaion so it wont shake when riding Adjust the position of the top two straps to install the bag on the left or right side of handlebar Drain holeEnsure that there will be no ponding in rainy days Net side pocketConvenient storage mobile phonetools energy bars etc More capacity top heightening design to hold a higher bottleTightening drawstringStable and easy to take out OccasionCommuting cycling outdoor sports business travel etc Suitable for different bikes or scooters