Velo Orange Retro Bottle Cage With Tab
Made by hand from a single length of 3mm stainless steel rod and then electro-polished. The Retro is a regular one-handed cage; you insert the bottle just like in any other cage, but it holds the bottle very securely due to the spring-like shape.
You can spread the cage for an oversized bottle, or squeeze the cage inward for a better fit with (for instance) a metal water bottle.
*Images are from Velo Orange