Yup, that's Pro's Pro. Most of the Poly I've tried goes dead within 2-4 hours, but the reels are super cheap. I personally don't think any of their polyesters have amazing feel (or sound at impact), but I can get some really good results for a couple hours out of a few of them, namely Blackout strung <50lb. Their Multi's seem to have closer feel to their Name Brand counterparts, like HexMulti, which plays just like the Dunlop HexyFibre...The biggest difference I've noticed in PP strings is that they lack the special coatings that the bigger brands use, therefore reducing snapback, durability, and perhaps feel. I also went through several sets of the Orange Hexaspin, which played and felt a lot like signum Pro Poly Plasma Hextreme, for about 2 hours, then turned into a rocket launcher and started feeling stiff, like it lost all its pocketing properties! Again, I noticed that the ProPro Hex Poly looked and strung up just like a copy of Signum Hextreme.....however it was lacking the slickness, which I am assuming is a coating or proprietary additive, which also caused the string to lockup and get stuck out of place probably around an hour. Pro's Pro reels are so cheap though, that if you string yourself, it's fun to save some money and test out a couple reels, or have it on hand for anyone that just wants a cheap polyester string. I miss access to Pro Supex here in the States, because IMHO they make great budget strings, but they weren't Pro's Pro level cheap, and now the market if oversaturated with strings in the mid-range price point from bugger brands that overshadowed the Pro Supex Strings. Pro Supex Maxim Touch was a fantastic multifilament string that I switched many of my Wilson NXT customers over to and it was less than $10/set. Pro Supex Blue Gear was a lot like the Diadem strings, many years before Diadem "invented" the Star Core technology. Pro Supex was ahead of their time, if you are overseas, I recommend to test Pro Supex along with Pro's Pro.