Tacx: The Shanti bottle has a membrane lid that can be twisted open and close with one quick and easy move. When the bottle is 'locked', you cannot drink from it and its content cannot leak out, which is ideal when the bottle is stored in your bag.When the bottle is 'open', it is constantly ready for use; to drink from the bottle, a simple squeeze suffices. Only when you squeeze the bottle, the liquid will come out in exactly the right quantity.This means no more fumbling with pull spouts as there is with other bottles. In addition, the membrane system ensures the bottle's content doesn't leak out.Shanti Twist collectionThe bottles from this collection have a subtle print with a small but striking pop of colour. In combination with the many available colours, this means there is always a bottle that matches your bike.The clear bottles have graduations to indicate the amount of liquid in the bottle.