 With the knowledge that fluorocarbons are not what we want to have in our supply chain, it was a big ask of us and our partners at Gore-Tex to move away from PFCs and together we worked in a kind of, they developed things in the lab, we field tested and it was a journey that has ended up with gaining so much more out of it for us, but it started with a simple request to move away from that chemistry. So our goal was to move out fluorinated chemistry and that was in both the DWR and the membrane, but along the way we ended up with so much more. We ended up with a face fabric that had this softer and more buttery feel to it. We had in its actual production a lower mass in materials used, that's both in water and chemistry and in the end we've actually obtained a third-party verification through BlueSign. We're not marking our own homework here, both ourselves, Gore-Tex and third-party have said it's a great move forward into that fabric. The lab at Gore-Tex, these guys have got the science, these guys are medical, these guys look at the highest level through simulation, through lab testing, but then that's partnered with field testing. It takes what we know in the lab to make sure it holds up on the mountain to make sure we get the right product and then we can take forward into production. Field testing went on for a long time. When we're doing such a big shift like we have done, this isn't just the kind of at-the-box test. So we did the flash test, we did some medium and long-term and we did it across pretty much across Europe, making sure it held up in Scotland and it held up in high alpine pressure. So the two have to come together before we can then say, let's go forward. Future of Gore-EPE is that right now we've come back round with a few of the gores that used to be in the market, but Gore-EPE is going to keep rolling on out. Gore-Pro will come and actually as we have more demands through other sports they will continue to innovate and make sure that it's not only the original suite of fabrics that we come with in new chemistry, but we can go much more beyond that in the future. The project that we've undertaken here to make sure we switch into the Gore-EPE There's been an amazing kind of combination between us, the labs, the field testers, but it takes on kind of what we are as a business. So our business is to make sure that we take what we know, apply it and then take that further out into the future. So this isn't the end of what we're going to do with Gore, this is just us getting going. We know that the membrane is the right thing, we've already made garments into it and we're going to bring more of that as we continue out into the future seasons.