Our only non-slip on design, the FORTIS features an protective shell for abrasion resistance and Level 1 impact protection to stand up to all your particularly downhill riding needs. Features Perforated neoprene chassis for breathability. Strategically placed embossed ventilated foam padding. Dense forward facing chassis for shield protection. Internal elastic webbing to prevent slippage. Tacky silicone elastic webbing to prevent slippage. Hook and loop thigh and calf closures with security cinch. Pre-curved chassis for attack position. Fortified injection molded plastic shields. Impacted Tested with Level 1 Protection. CE EN 1621-1:2012 Level 1. table, th, td { padding: 5px; border-collapse:collapse; color: #000; } table { border-spacing: 2px; } tr { border-bottom: 1pt solid BLACK; } th { text-align: left; } table > *:first-child:not(thead) td:first-child { font-weight: bold; } div#sizechart { background-color: #cecece; padding: 20px; line-height: 20px; color:#000; }   SIZE CHART - KNEE GUARDS Thigh Calf SM  40 - 41 CM 35 - 37 CM MD 41 - 42 CM 37 - 39 CM LG 43 - 44 CM 39 - 41 CM XL 45 - 47 CM 41 - 43 CM SM/MD 40 - 42 CM 35 - 39 CM L/XL 43 - 47 CM 36 - 43 CM Measure 14mm above the knee and 14mm below the center of the knee for proper fitting.