tatami mat finished on both sides
A tatami mat with a finished surface on both sides, allowing it to be flipped over and used on either side. Common in traditional Japanese rooms.
This room has tatami mats finished on both sides.
Tatami mats finished on both sides are convenient because you can use either side.
Compound of 上げ (age, 'raised' or 'finished') and 畳 (tatami, 'tatami mat'). The exact historical derivation is uncertain, but the term refers to the mat being 'finished' on both sides.