Material Down Airflex 550+ Limestone Neoprene Features Glued and BlindstitchedAirflex 550+ limestone neopreneYKK Free_X constructionZodiac2plush inside liningVelvet Quick dry liningFused edge collarDrain holes and Velcro leg strapsKED, knee Elongation Design, freedom of movement Zipper Free-X Seams Glued and Blind Stitched Lining Zodiac2 Plush / Velvet Quickdry Drainholes Yes The Prolimit predator down-Airflex Free-X wetsuit for men is the best suit in our advanced series. The full Airflex 500+ neoprene makes this a very flexible suit and the ftm taped seams make sure that no heat escapes through the stitches and that the stitches are protected. The zodiac fleece lining on the inside and the 5mm neoprene, keep you warm in extreme conditions.