Reviving this thread.
I purchased a full set of X-act Huskys for my 2018 Yukon XL recently based on the set I had in my 2014 Suburban. The front set is great. The second row is a horrible fit and the same pattern as the weather beater series. A reached out to Husky and they told me the 2nd row mat was "stretched". Sent me a new one direct from the company. Same crappy fit.... They have obviously made a financial decision to reduce quality on the mats for this newer generation of GM full size SUVs. They admitted it is the same mold for both the weather beater and X-act fit series for these trucks. That is not what I bought based on previous experience / expectations. I sent them an email today explaining this and how disappointed I am in this decision to reduce costs / product quality. They have yet to reply.
DON'T buy Husky liners (any series) for the second row of these GM full size SUVs (2015-2018) - they SUCK!
The X-act fit mats in my 2014 were awesome - highly recommend those.