LRCC

Here is a picture of one of the straps on the rear of the wardrobe unit. These hold the water containers in place and are identical to the seat straps other than how they are attached. They are 1 1/4" wide so the army straps in Mick's link must be virtually identical other than colour.
Hope that helps
Ian

My original straps were just as rusty as Ian's, hence replacing them with new surplus military items.