Symbol 2951 from ISO 7000 - Title/Meaning: High protection against extreme sunglare Function/description: On sunglasses: to identify Category 4 ""special putpose"" sunglasses with a luminous transmittance that provides high protection against extreme sunglare such as encountered on sea, deserts, and snowy mountains.Note: Forms part of series of five symbols depicting various degrees of sunglare reduction
pay attention to orientation of symbolAdditional information: 
Similar symbol has been in widespread use by the sunglass industry for some time.
Own work using: iso.org/obp/graphics/grs/79715705-d820-4b64-8c25-2833110ab9d2 200.png
Vectorization:  Mrmw