It seems to be a funeral cloth that was probably placed over the head of the corpse of an adult male of normal constitution. The man whose face the Sudarium covered had a beard, moustache and long hair, tied up at the nape of his neck into a ponytail.
The man was dead. The mechanism that formed the stains is incompatible with any kind of breathing movement.
The man was wounded before death with something that made his scalp bleed and produced wounds on his neck, shoulders and upper part of the back…
The only position compatible with the formation of the stains on the Oviedo cloth is both arms outstretched above the head and the feet in such a position as to make breathing very difficult, i.e. a position totally compatible with crucifixion. We can say that the man was wounded first (blood on the head, shoulders and back) and then 'crucified'…
The Sudarium contains pollen grains of Gundelia tournefortii, identical to that found of the Shroud that grows only east of the Mediterranean Sea as far north as Lebanon and as far south as Jerusalem.
The blood (stain symmetry, type and other indicators) on the Sudarium matches the blood on the Shroud.