I was lucky enough to win a pair of these off e-bay and just received them today.
They are Aero's version of the "mosquito boot" supposedly popular with pilots during WW2. I have never seen a picture of a period pair so these may be just a fantasy boot, but still damn cool for all that. Aero added a USAAF tag calling them type A-15 but that is probably just hyperbole on their part. From what I have gathered these were only made for a couple years in the late '90's and are very hard to find. These are similar to a pair of Willis & Geiger mosquito boots I used to own but of a much higher quality and better design.
The leather is horsehide (Which I did not know until I read the tag inside the box) in a deep russet color. They leather is smooth and soft, but the boots stand up just fine by themselves. They are fully lined with a very smooth kidskin-type leather with a suede patch behind the heel. The inside of the upper and lower straps are also lined with this kid leather. The soles are flat leather and stitched on with hard layered heels which have rubber as the bottom layer. Overall the boot sticth work is excellent and should hold up for years to come.
This pair is a UK 10 which equates to about a US 10-11. I tend to run a US 9.5E so a UK 10 fits me well with an thick insole , leaving the toes about 1/2 inch longer than normal. The boots are about 13 inches tall with a high vamp (oddly, the vamp on these looks closer to a real pair of RAF 36'rs than the version Aero currently sells).
These boots were bought by the original owner as a spare and never used, the only wear on the sole is from me trying them out them around the house tonight. They smell a little musty, but that will go away soon enough.
I am very pleased with these boots, if you ever find a pair, GRAB THEM!
And in comparison to my other boots, really shows the russet color of the Aero's