Upon trying this mask on, it is quite light weight, the straps to tighten it are not so secure, it wasn't cut out evenly, and it can flex pretty easily. It wouldn't fit as it was under my Boogie Regulators so, I peeled off the cloth from the top, and used a wire cutter to shape it to my Boogie Regulators. After that, the cloth easily went back on with some hot glus, (I tried other glues but they weren't as successful). Now it fits good under the goggles but if you have a big jaw like I do, then it pushed up against your nose at it's widest setting and is quite uncomfortable. I'm a size 7 1/2 in fitted hats just to give you an idea so anyone with a smaller head than that should be good. If it weren't for my big head then this mas would have been perfect.
Easy to adjust
Can be shaped to any type of goggles
Straps slip on hair easily unless you sit them on top of your head
Squeezes my face
Doesn't completely cover my jaw