Quote Originally Posted by lph View Post
hmm - I don't know my head size, I'm afraid, but I use a Giro helmet size M, the Small fit but didn't leave me enough leeway for anything underneath i winter. So I guess I'm a S/M. I wear the regular Buffs, but after a lot of wear they get a bit sloppier. Tehy're too loose for me to wear them around my neck like a neck gaiter, though, they just slip down.

Thx for answering lph...
I was right on the cusp between a small helmet and a medium too. I bought the small. It is a struggle to get stuff under it. I've never worn a full skull cap. Just my PI headband. The lip on the band can dig in with the tight fit. I like that the Buff is a seamless garment for that reason. I did wonder if it would stretch out as you have noted. I'm sure one of the reasons why my PI headband has the seamed edge (to help prevent stretch out). I might just order both a youth buff and an adult buff. DD liked them too, so good excuse to give both sizes a try. Sounds like it has so many purposes, tighter or stretched, it's a good garment to own.