Favorite balaclava (sub 1.5 oz)

I really like the Patagonia Capilene 4 Balaclava (HE). It's a great piece for me.
1.2 oz, compacts down very small, nicely warm, stretchy, and very breathable
(It is made from Polartec Power Dry – the High Efficiency version)

For my head shape, it easily & comfortably pulls down below the chin. YMMV.

Be aware that it is not intended to offer wind protection – for wind protection, you'll need to use it in conjunction with your shell's hood … that is, if you expect your balaclava to offer good wind protection as a stand alone piece.

Wickers.com has some nice stuff. My large mid-weight balaclava is 1.4oz and very comfortable.

OR makes several good balaclavas; I have the Ninjaclava.

I can't do balaclavas. Feels like suffocating no matter what brand, honestly. I use a merino wool bandanna and an OR Windstopper Peruvian Hat. Good system, since it covers my neck too. Don't think it's more than 2.5oz.

YMMV