What size caps are the Private Label Extensions wigs created with?

Our wig caps are 22.5cm in circumference. (Medium sized cap) 
Our front lace wigs are 13 x 4. (13" across (ear to ear) and 4 inches back (parting space).
Best if you wear your hair down.
Full lace wigs are great if you want to wear your hair up in a pony tail.