I wouldn't worry as much about material .Halo around 2 drops of blood after unsuccessful attempt to clean it is what worries me. If the stain is not to old, Prochem Protein and stain spotter should help. If you don't have any complicated fill on inside, just the poly foam, treat the foam first, before surface. Spot lifting should help on the poly foam to prevent wicking. Material doesn't appear to be linen or anything with natural fiber mix. I'll go for PES and Poly mix.(Polyester and Poly propylene)
Something tells me this material shouldn't be over saturated, if I see bigger loops I would say is Rayon and then were going to sisal area. Did you do burn test? I would like to know for my self. Where is the upholstery expert, hello.