How to make a 'cap keeper'

For those interested in learning how to make their own 'cap keeper' for their own water bottle. Trail Ambassador Jason Klass recently created a great step by step article on his website about how to make a 'cap keeper' with a normal plastic water bottle like a Gatorade bottle.

The point in designing your own water bottle is that one can have a lighter water bottle with a 'cap keeper' than a heavier Nalgene type bottle.

Enjoy!