POC vs Giro Sizing

I have a poc and i'm looking to get a giro shiv!

The sizing with poc is weird because i normally fit like a 7 1/4 size hat, but i got a medium poc helmet. at first it was too small, but i took the round end of a screwdriver and packed out the places that were tight on my head.. now it's custom fitting and awesome!

So i would suggest a large and see how that fits when you get it. If it's wayyy to small, then send it back, but if it's just really snug, try packing out the foam on the inside. hope this helps

measure your head with a tape measure then look to see what poc recommends for your head measurement. when you get the helmet, mess around with taking some of the pads out/swapping for thinner ones, etc until you like the fit. then, if you took padding out, put duct tape over the velcro so it doesn't get stuck on your beanie or goggle foam or anything. i did it it fits great! just play with it and find the way that works for you.

Yeah, POC sizing is slightly small. I have a medium Shiv but fits a Large POC.

Yep, if you're planning on switching from Giro to POC I'd go one size up. I have a medium shiv, but when I tried on a large receptor bug it fit perfectly.