These Vitrex 33 2102 Safety Goggles are designed to provide ultimate eye protection and comfort for long term use. They are Impact resistant with clear polycarbonate lens and they have indirect ventilation for protection against dust and liquid splash.The strap is elasticated, is fully adjustable and will fit over most prescription spectacles. They are suitable for various applications including woodwork, home renovation, painting and for use with most domestic power tools.These Safety Goggles conform to EN166 and are CE Approved. .