F20 headgear

[tiredNorlando]

Hi, I bought a brand new f20 airtouch, the mask size is medium, I did not realize that these have different sized headgear! Its too small because I have the velcro straps as far out as they can go and the mask is getting pulled upwards towards my eyes..... so I have a large head and need large headgear instead of the medium it came with.. does anyone have a large headgear for resmed F20 by chance they want to sell?

thank you!