THE OV21
As mentioned earlier the ov21 is made out of aluminum (frame), TREVA USDA certified polymer (plastic), walnut (earcup exterior) and leatherette.
In terms of size the thinksound ov21 is a medium sized model.
The pieces of walnut attached on the exterior of the earcups is something i really liked (still i expect some people to feel the exact opposite).
As expected, the 3.5mm port is located at the base of the left earcup.
Left and right markings are printed on the interior of the headband just over the earpads.
Air ports are located at the top of both earcups as seen above.
The medium sized memory foam padded earpads are dressed with leatherrete and are very easy to remove and replace.
Even though the headpad is probably not filled with memory foam it's very comfortable and has the company logo on the exterior side.
The headband can extend up to 34mm on each side via 9 increments (7 of those are visible from the interior).
Both detachable nylon braided cables feature gold plated 3.5mm plugs.