With obi ties, red x navy, arrow pattern komon

Purchased at a second-hand shop. I have not worn it. The basting stitches on the sleeves are still attached, and based on its condition, it appears to be an unworn item.
I believe it is pure silk, but the material is unknown.

Front width: 22.5
Back width: 27
Sleeve length: 49.5
Sleeve length (center back to cuff): 61
Body length: 152