I'm using a combination of MICH padding and some thinner black cloth covered foam padding. The MICH padding works great in the front and sides of the helmet. I found it to be too thick to use on the crown and back though. The round crown pad made the bucket ride up too high, and using the mich padding all the way around the inside made the fit way too tight. The fact it sticks to the hookside of Velcro is awesome, really handy for adjusting the fit.