BELLMag-9 Open Face Motorcycle Helmet (Solid Matte Black, XX-Large)

Q: I use a packtalk set can it be used on this helmet?

Most common comm systems ear speakers will fit inside this helmet.

Q: Is there a sizing chart?

Here is the link to the Bell Site with the chart. https://www.revzilla.com/motorcycle/bell-mag-9-sena-helmet-solids . I size out at a Med but the large is more comfortable (Med oval shape head) I do have narrow cheekbones so I order one size LARGER 45mm cheek pads and the helmet fits great. https://www.revzilla.com/motorcycle/bell-mag-9-cheek-pads ** I did note use the Bell site because some of the info is WRONG. Hope this helps.

Q: Is this for sure the Sena edition helmet? I'm being thrown off by "unisex" being in the title, rather than "Sena" like other listings have.

One caveat I thought of after my first reply. MY SENA-10 would not snap in place perfectly. I unsnapped part of the inside shell of the helmet and used a hex screwdriver to remove the built-in speaker/mic unit and placed a very small washer between the retaining screw and the unit. This slight improvement provided the tolerance for the SENA-10 to snap in perfectly. I think the angle needs to be perfect for the SENA-10 to snap in place like it should.