Hi, I own a medium company and would like to purchase this helmet here is the info :  v\:* {behavior:url(#default#VML);}o\:* {behavior:url(#default#VML);}w\:* {behavior:url(#default#VML);}.shape {behavior:url(#default#VML);} st1\:*{behavior:url(#ieooui) } Features: Arc,Mig, Tig, Mag and Plsama Auto darkening viewing lens Easily adjustable darkness Wide viewing of 98x40cm Replaceablelenses and darkening cartridge Widerange of adjustments ensuring good fit Quality foam head strap for comfort Strong and light design Specification: Switching time from light to dark 2/10.000seconds (0.0002secs) Switching time from dark to light 0.1 1second Uv transmittance Less than 0.0001% IRtransmittance Lessthan 0.001% Darkness range when dark DIN 9-13 adjustable Darkness level when light DIN4 Weight 0.493kg Compliances ANSI and CE MOQ 50 for trial order Price range : dont know yet, since there are too many suppliers, I could only reply to competitive prices