Delivery： Delivery was fast. Quality： Love this product, was pleasantly suprised, excellent, top of the line quality.  Easy to use, mask material sturdy yet very flexible so it fits the face. Straos are velcro to ensure great fit for any face size.   Excellent value for the cost. HIghly recomend this face mask and would definatly purchase from this seller again.

the hat itself is well built and professionally assembled and packaged. you will get a very professional looking product, and if you - like i - from a related area (electrical engineer and physicist here:) ) and will delve into specifics - you won't be disappointed - not from your investigations / measurements as well as from the seller service which is really out of the ordinary. overall, i had a great purchasing experience and will definitely return to this seller in the future.