Was reading the thread about Fischer's new Progressor, think it's interesting how racquets and skis exchange aerospace technologies that some here inevitably consider ad hype or gimmicks. Fischer has been marketing a successful ski called the Progressor for a year now; all of its better carving skis have been using the vacuum air carbon, frequency control longer than its racquets. And of course, all of Fischer's tech comes from their production of structural components for exotic cars and aircraft. Howard Head was an aircraft guy who started an American ski company in the 50's that made (gasp) skis with aluminum sheets top and bottom. Fischer was making highly competitive aluminum skis by the middle 60's, Rossignol (which used to make racquets) introduced fiberglass torsion box skis back then too. OTOH, some technologies (like everybody's graphite and titanium, Head's i and LM) get to racquets first, then skis, but stick longer with latter. Head still makes very popular high performance/race skis with i and LM, and last year introduced something that seems derived from Microgel for its backcountry skis. Blizzard (Austrian again) is trying magnesium in place of titanium, which I expect to see in someone's racquets if the patents are doable and people don't mind spending north of two benjamins. So unclear why this stuff is "hype" when it appears to be platform materials almost always borrowed from established aerospace or F1 racing designs, then applied to whatever sports equipment these companies make, from boats to badminton, see if and where it helps. Yeah, there are old ski race coaches who grouse about how hard it is to find a "basic" wood core sandwich wrapped in fiberglass, but World Cup races are being won on skis with exotic metals, "caps," vibration absorbing systems, graphite inserts and so on. And over on this side, don't hear a lot of nostalgia for wood racquets from the pros; even on TW, apparently pure graphite is the new "old school" material. So seriously, are we supposed to believe that these materials do improve the performance of airplanes, race cars, boats, and skis, but are just sales gimmicks for tennis racquets?