The foil vest has clash foam plates and sturdy NBR foam to protect your spine making it perfect for foil surfing. You will wipe-out hard on your first couple of tries believe us. It comes with top of the line M-flex 2.0 neoprene lined with knitflex on the outside and flaremesh on the inside for quick dry properties. THE DETAILS: CE approved YKK Front-zip Clash foam Spine protection (NBR) Non-padded harness waist part Zipper lock Please note: This is not a floatation device / buoyancy aid MATERIALS: M-Flex 2.0 (100%) Emboss patterned superstretch Fox Fleece inside