Cut one of the straps off your furniture.  Place both pieces of the strap in a pot of water just under boiling, about 200 degrees.  Let sit for about 5 minutes and remove.  Measure both pieces from end to end and this will be the original strap length.

Straps can be different lengths on the same piece of furniture.  Sometimes the seat straps can be a different length than the back straps for example. If the lengths look different they probably are.

If you have any problems with this procedure feel free to email us or send us a strap with your order and we can measure it for you.