A:AnswerThis case is super customizable and will fit the the old and new oculus quests. Only thing I wasn't fond of is that you will have to glue some of the cushion in place to keep from having to re- adjust everything everytime you take your vr headseat to use it. Besides that. It works
A:AnswerNo.
The is a basic hard plastic case without a gasket seal.
Good for knocks not great for submerging in water.
The plastic however can get wet and be wiped off no problem.
A:AnswerI don't know the approximate values but it would be equivalent to putting on a large motorcycle helmet when the head strap is fully extended. Glasses wise, as long as your glasses are normal shaped, there should be plenty of room for them and adjusting as needed.