Description on Wayfair says is it is waterproof ... about halfway through installation it mentions that "the design of thi sunit leaves open space in the back of the tub, leaving potential for water leakage".  Also, our contractor installed the door per the instructions, leaving 5/8" space at the bottom of the door for the plastic sweep to be installed - assuming it will reach/form a seal with the top edge of the tub.  The sweep isn't 5/8", so it does not connect with the tub - leaving a little more than an 1/8 of an inch clearance above the tub edge, so water just runs out.  Also, handle once installed is very loose.  The glass is as described, it seems very thick and tough - just what I expected.

Pros: Glass as expected.
Cons: Install lower than instructions, or you will not get a seal with tub on lower edge.  Needs an additonal 1/8 inch rubber gasket - at least - for door handle to install firmly