I haven't opened the rug yet but the under side of the rug is well made, none of that cheap foam stuff as well as I can see the tight weaving. FAST Shipping. Arrived and was well protected on the ends. I was very happy to see that. Last time i bought a rug from an online retailer the ends were not protected at all and the rug was very damaged because of it. 
I can see the blue and greys from the bottom of the rug and I am very excited about it. 

I will update review when we open rug when our new home is ready for it.