For Nyarth's exclusive use. Width on the side board: approx. 19cm Non-slip on the back of the strap, on the side of the back board Pocket on the side board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . This is a shoulder strap to protect your precious double bass from scratches. The front is black paisley satin jacquard. It has a subtle sheen. The back is 100% black silk. The strap is grosgrain tape. It fastens with Velcro. In the sample photo, the width on the side board is approximately 13.5cm. You can also specify the size. Additionally, a non-slip feature can be added to the back. Please let us know if you have any requests. . . . . . . . . . . We will create this after receiving your order. Please allow 1 to 10 days for production. . . . . . . . . . . We strive to make each item with care, but please understand that it is handmade. #stringinstrumentblanket #violinprotection #violincase #violinaccessory #silk #violin #bassbib #doublebass #doublebassshoulderstrap