This is an obiage (sash tie) made from a bolt of fabric. The material is unknown. I don't think it's silk. Approximately 8.5 x 154 cm The opening for the obimakura (sash pillow) is about 28 cm (obimakura not included). It's a slightly dull navy blue color compared to the photos. See photo 5. This is a remade item created by an amateur. Please consider this before purchasing. Thank you for looking.