What does rec G mean on sunglasses?
REC G rimless clipon is a retro way shape with lightweight and durable design that fits plastic and thicker frames. Gray lens are perfect for everyday use.
Do solar shield sunglasses have UV protection?
All Solar Shield lenses, gray, amber and yellow, provide 100% protection form damaging UV rays. This is equivalent to saying they offer UV400 protection.
How are clip on sunglasses measured?
Use a millimeter (mm) ruler to measure across the front of one of your prescription lenses (see example diagram “Measuring for Your Clip-Ons Size”) — this will be the size for your clip-ons. Make sure that the clip-on size you select is at least as large as your lens measurement.
What is a solar shield?
Solar Shield is a flexible membrane with low permeability that can greatly reduce expansion and contraction of a roof. It also prevents corrosion and surface deterioration.
What is the rec number on sunglasses?
What does the number in the product code indicate, eg: Tru Rec 54? The number indicates the width of each lens of the clip-ons in millimetres, eg: 54 mm. This dimension includes the metal rim on rimmed styles. On Rimless types the width is to the edge of the clip-on lenses.
What do the numbers mean on clip-on sunglasses?
C) Clip-on Sunglasses with Color Mirror Lens. 2) The second method (and admittedly the crudest and the least accurate method ), is by simply looking at the numbers on your frame. You will see a series of numbers which may look like this (51 – 18 – 135) A) The first “two digits” “51” indicate the width of one lens.
Do night glasses work?
Some wearers of night driving glasses report that they’re better able to see at night while wearing them. However, visual tests indicate that night driving glasses do not improve night vision, and do not help drivers see pedestrians any faster than they would without them.
What do the numbers mean on clip on sunglasses?
Do solar shield glasses block blue light?
The amber color of these impact-resistant polycarbonate lenses block short-wavelength blue light and 100% of ultraviolet (UV) light, thus providing additional protection against cataract formation and the development of macular degeneration, while increasing contrast on both sunny and bright hazy days.
What is solar shield made of?
The sunshield consists of five layers of a material called Kapton. Each layer is coated with aluminum, and the sun-facing side of the two hottest layers (designated Layer 1 and Layer 2) also have a “doped-silicon” (or treated silicon) coating to reflect the sun’s heat back into space.
Do clip ons scratch your glasses?
Will the clips scratch my lenses or frames? The four retaining clips on the clip on sunglasses have a clear vinyl protective sleeve to help protect your lenses and frames from scratching. Provided that you take reasonable care when fitting or removing the clipons, scratching is not normally a problem.
What does c3 mean on sunglasses?
Category 0 — clear or very light lenses for fashion and indoor use. Category 1 — pale lenses for overcast days. Category 2 — moderate lenses for protection against glare. Category 3 — dark lenses for bright days (the most common category)