Do not buy!
If you like the design, just go for the M-Pro, which is really simmilar.
I have worn both for a couple of hours, and while i like the mask in general, for me it sometimes gets to close to my eyes and touches my eyelashes, which is annoying. Maybe this is the one for you, if you have a really big head, otherwise got for the M-Pro.
Otherwise the seal is pretty good, it is really comfortable, but in my opinion outdated. I like the clips, so you can easily get in on and off.
Used it on the Train, and there the clips are great, since they aren´t as loud as the velcro on the other masks.
Also, the weird "leather" pieces on the side, just look a bit weird when wearing the mask, in my opinion.
Maybe an updated version could be an improvement.
If you like the look and have a pretty big head, then go for it, otherwise if would look at the other models.