Get the Fidlock water bottle and holder. This is a unique product because the water bottle attaches to the holder via magnets. You don’t even notice the holder because it’s so low profile. This results in an elegant and efficient design. Every water bottle system I’ve seen ruins the aesthetic of the bike because they stick out in an ugly manner. The Fidlock system looks awesome and securely stows your bottle. I’ve never lost my bottle, even charging down black diamond runs. I wish I had found out about this product long before I did so.