Ronhill Vizion Contour Running Tights Powerlite fabric - This offers great freedom of movement due to the inherent stretch capability and importantly recover to their original form after being stretched. High elastane content - provides excellent support with great stretch and recovery UPF 50  independently tested & certified to block at least 97% of the sun's harmful UV ray's from reaching the skin. Power-mesh inserts - for added breathability. Reflective tape at front and back - stay safe when in low light conditions.