This is a vibrant, bluish-green obi締め (decorative sash tie). It has been used a few times and is still in good condition. It ties securely. Please check the images for the condition. I will include a box, though I'm not sure if it's the original one. (I own several Domyō obi締め, and I'm not sure which box belongs to which obi締め. Please understand.) The color is probably aobake-iro (bluish-green bamboo color), but I can't be certain. I've uploaded images for your reference, so please make your own judgment.