The visors are usually UV darkened and can be removed.
The two best-known species, so much alike in size, form, colour and habits that, although they are widely separated geographically, some zoologists question their specific distinction, are P. lutreola, the Norz or Sumpfotter (marsh-otter) of eastern Europe, and P. visors, the mink of North America.
Accessories - We can supply all types of visors and ear protection (including ear muffs to fix on to safety helmets ).
These standards currently allow visors intended for daytime use only to have a moderate tint with a minimum light transmittance of 50% .
Motorcycle visors Consultation seeking views on options for possible changes to the permitted minimum light transmittance of motorcyclists ' visors.
