Bowtex-makes-under-garments-that-protect-against-abrasion-impacts-and-heat-you-can-slide-under-any-pair-of-jeans-or-pants-are-comfortable-to-wear-all-day-long-all-year-round-let-you-keep-an-urban-look-On-and-off-the-bike-The-base-layer-which-covers-the-whole-legs-55-Kevlar-25-Protex-20-Cotton-protects-against-abrasion-impacts-and-heat-and-provides-good-temperature-regulation-for-a-high-level-of-comfort-The-added-patches-100-Kevlar-on-the-bum-hips-and-knees-will-withstand-several-seconds-on-the-asphalt-Bowtex-is-the-only-brand-offering-a-2-layer-system-for-enhanced-protection-And-last-but-not-least-the-leggings-have-built-in-pockets-so-you-can-insert-the-D3O-rated-knee-and-hip-protectors-sold-seperately-The-fabrics-used-in-the-products-are-designed-to-provide-optimum-comfor-and-protection-and-meet-strict-European-norms-In-winter-it-39-s-an-added-layer-of-thickness-for-extra-heat-In-hotter-days-the-fabric-lets-air-flow-through-your-legs-to-evacuate-moisture-and-cool-them-The-black-version-more-expensive-is-not-simply-dyed-in-black-but-manufactured-using-black-Kevlar-fibre-The-products-meet-the-following-EU-norms-EN-12127-1997-EN-ISO-13934-1-2013-EN-ISO-12947-2-2007-EN-ISO-15025-2003-EN-388-2003