Summary
Arguably the best adizero adidas ever made, in one of the original colourways.
These boots are a product of the lightweight frenzy, when adidas, nike and puma were looking to shave as much weight off their boots as possible. That trend is gone now, as is the adizero line, but many boot enthusiasts will argue this is the best synthetic offering adidas ever came up with for that market.
A solid minimalist ultra-lightweight synthetic boot for firm ground. The studs are quite short, so not a bad pair for artificial grass either.

Sizing
True to size. I wear an 8.5UK in all my football boots (message me if you're unsure about the size, we can discuss), and these fit me perfectly. Since they're not leather (hence they won't stretch) and are relatively narrow, they could fit a size 8UK, too.

Condition
Used for 5-10 games on grass, so some wear on the studs. Otherwise they're fine - no sole separation in site, no smell.

Extras
Come with 2 original pairs of insoles - "lightweight" and "comfort". They're good for helping you adjust the size and get a better fit and for adding/reducing cushioning (good if you plan to play on artificial grass).

Review
Full, thorough review here:
http://soccerreviewsforyou.com/2013/11/adidas-f50-adizero-2014-synthetic-review/