Comfortable
Very good thermal lense. Haven't had it fog once
Excellent peripheral vision
The flexible bottom half will usually cause balls to roll of rather than break.
I dont know if they still do this, but mine came with a clear and a mirror lense.
Comes with a bag
Weaknesses:
Not much. The foam pieces that sit behind your ear have a habit of falling off. The price is a little high, but thats true of any good thermal system. The only other thing is the flexible bottom half will become mishapen if you store it wrong.
Conclusion:
Definitely the best goggle system I have used. I would and do recommend it to anyone.