This is fitted to most Porsche VW cars of the early 1970's that used the inertia reel seatbelt. The webbing is produced to military specification and exceeds the seatbelt industry test standards. If you are looking to restore your original belts, this is the correct material. The webbing is sold in 7m rolls and this will re-web a pair of reels.
Material is pictured on the right in the photo.
Price is £80 UK pounds shipped.
IMG_3290 by stretch1985, on Flickr