These-approved-impact-protectors-are-made-from-lightweight-flexible-PU-engineered-in-a-3-dimensional-form-making-them-very-soft-&-flexible-The-finish-is-smooth-&-the-edges-are-thin-making-Knox-reg-Flexiform-protectors-an-excellent-choice-for-leather-garment-&-textile-garments-They-also-give-the-rider-flexibility-&-total-freedom-of-movement-with-2-hinge-points-to-aid-movement-&-12-holes-for-breathability-The-inside-incorporates-air-channels-to-help-with-heat-dispersal-keeping-the-rider-comfortable-&-cool-while-offering-excellent-protection