Mitt
Rawlings Heart of the Hide PROFM19 in Black with a Brown Web/Lacing and White Stitching
Got some help from @smasherbat again on this one. I’m taking his word for it that this the 13″ pattern, which is available, but with Pro Mesh, which Davis doesn’t have. The identical single-post model with different colors is available in a 12.5″ pattern as well (the PROFM18C). Lastly, there’s a game model Adrian Gonzalez mitt, the PROFM20, a 12 1/4″ with an H-Web available as well—shocked to hear Gonzalez uses such a small glove.

Source: Keith Allison (For my money, this is the best Flickr account there is)
Sunglasses
Oakley Radar Pitch (not straight stem)
Chris Davis is the rare ballplayer that wears the regular stems. Davis wears a Grey Smoke frame that is not available with the custom tool, but here are his specs anyways (everything aside from the frame color is available):
- Frame: Grey Smoke (unavailable with the custom tool)
- Lens: Fire Iridium Pitch
- Icon: Team White
- Earsock: Black

Source: Keith Allison
If you like the Grey Smoke frame, here are your options.