Mateiral :Full carbon fiber-Toray T700 Suit for :Trak/Road/MTB/Snow Bike Install : Can be installed on anywhere of your bicycle Suit for Bottle :Suitable for tube of 23-32mm in diameter Weight :A (30g±1g) ;B (22g±1g ) Fixed : Fixed with stainless steel butterfly nut Logo painting :Customized is available Quality control : All pass EN14781 (SGS) Standard Test