I’ve been using the Sawyer bottle that came with my “Squeeze” for over five years now. This is the “improved” collapsible bottle, not the original problem-type bottle. I never try to fill the bottle directly, I use a water scoop made from the bottom half of a 2-liter Platypus collapsible bottle to fill the squeeze bottle. It weighs less than an ounce and can take water from sources around an inch deep. It can easily be squeezed into a pouring spout and also can serve as a “camp” water container. The scoop, squeeze bottle and filter roll up into a compact 1.5” x 4” bundle.