£37 collected from Bristol, or +£3 UK postage. Update: Now £30 posted
RightOn make great, comfortable straps, with an accurate adjustment system. This one is pristine as it was bought new but then used literally just once.
Width: 3.15" (8cm)
Adjustable length: 37.4"–59" (95–150cm)
https://www.rightonstraps.com/en/bass-strap-black-vegan.html