- Are these sunglasses or clear glasses?
- They are described as eyeglasses with a CR39 lens, a polymer used for both clear and tinted lenses. No tint, polarization or UV rating is stated, so treat them as a fashion frame rather than confirmed sun protection.
- What size face do the 57.5mm lenses fit?
- Lens width is 57.5mm, the bridge is 14mm and temples are 143mm, which is a medium fit. That suits most adult faces; narrow faces may find them loose and wide faces may find them tight.
- What is bio-acetate?
- Bio-acetate is acetate made with plant-based plasticizers rather than petroleum ones. It looks and feels like standard acetate but is the more sustainable option, which is why brands charge more for it.
- How do the Spark glasses compare with Ray-Ban Aviators?
- Both use the aviator shape, but the Spark uses a bio-acetate frame and Comotec hinges, while Ray-Ban's classic aviator is metal with glass or polycarbonate lenses and stated UV protection. The Spark is lighter in look and material; Ray-Ban offers proven lens protection.
- Can I put prescription lenses in them?
- Nothing in the product details says the frame accepts prescription lenses. CR39 is a common optical lens material, but you would need to confirm with an optician before assuming the frame can be reglazed.
- What comes in the box?
- The product details list only the frame and lens specifications. No case, cloth or pouch is mentioned, so plan on supplying your own.
- Where is the Spark Light Tortoise Frame Glasses cheapest?
- At Dima Eyewear (US), for $32.00, as of our latest check.