This is a guitar (bass) strap made from seatbelt material. I used it with rubber strap locks. It's from a smoke-free and pet-free home, and was only used in my room. From the product page: ERNIE BALL / 2" SEATBELT WEBBING STRAP BLACK, made with the same material as seatbelts, boasts high strength. It uses a webbing material made of polyester fiber, woven into a band, which is used for seatbelt belts. The simple slide adjuster made of Delrin material provides excellent playability. The Ernie Ball logo on the end gives a sense of luxury, making this strap both stylish and practical. Specifications: ■ Guitar/Bass Strap ■ Polyester Strap ■ Features: ・Polyester fiber webbing material with the same smooth feel and durability as seatbelt belts. ・Stepless adjustment with a slide adjuster ・Leather is used for the ends. ■ Size: ・Width: Approximately 5cm ・Length: Approximately 104-182cm ■ Color: Black