Simply push on to your existing tubeEasy on/off switchType:straight or 90 degree.1 replace straight type and 2 replace 90 degree type.Material:SiliconeSize:as the pictures shownColor: almost BluePackage include: 1x Bite ValveNote:Please don't use product with boiling water .Due to the difference between different monitors， the picture may not reflect the actual color of the item.Please allow 1-3cm error due to manual measurement.