tK.434 is the next generation ASSOSS5 34 length spandex bibknicker, which replaces our legendary T Knicker LycraS2. Wear the ASSOS tK.434 in combination with your ASSOS intermediateEvo or regular jersey. Perfect for warm Spring, Fall or cooler Summer riding. With FI.MilleS5 insert. Campionissimo AEPD racingCut regularFit. Clicks onto your body when in the tuck position. Anatomically ergonomic. Total freedom of movement. No excess material allows effective body temperature control and total comfort when riding.ASSOS Type A.434 compression spandex fabric on main panels: supports muscles, increasing your performance by delaying fatigue process.