Question 1

Can you provide documentation to back up that these are fda approved? you provide this claim in your technical specs.

Accepted Answer

Hello, Yes of course. In fact all sunglasses imported into the USA are FDA Class 1 Medical Devices and have spectral transmittance documentation on file. This is because of UV protection: Lens should have a UVB (280 to 315 nm) transmittance of no more than one per cent and a UVA (315 to 380 nm) transmittance of no more than 0.3 times the visual light transmittance.  Also there is a lens shatter test (ball drop test) that is performed on a certain percentage of every shipment that enters the USA. Every pair of legally imported sunglasses in the USA conforms to these standards. We had to mention the FDA thing on the product listing because so many people were asking about it for some reason. By the way, the FDA has no definition or guidelines for blue blocking glasses. For people looking for specific spectral transmittance properties (like anyone looking for sleep glasses), it's buyer beware! Please ask sellers to provide spectral transmittance test reports for the glasses that they sell. 
https://en.wikipedia.org/wiki/Sunglasses#United_States
Please contact us directly for more information. We also have a recent 3rd party spectral transmittance test report from Colts Laboratories in Florida that we can send you.

Question 2

Are the earpieces soft? They look uncomfortable to sleep in.

Accepted Answer

They're not soft at all but not uncomfortable. Like sunglass frames they're hard plastic.  I don't suggest sleeping in them.  Why not wear a sleep eye mask?

Question 3

Are these glasses recommended for use as sunglasses. if not, why not? i understand that they block uv just like good sunglasses.

Accepted Answer

No

Question 4

Why isn't this made goggle style to block out the light from above and on the sides? or do they make it?

Accepted Answer

Hello, no we do not make goggles. Depending on the shape of the face, these do a great job of keeping light out from above. They do sit fairly close to the face. Direct light and peripheral light from above is the most problematic.

We recommend goggle style with foam inserts and red lenses to people that work night shift and wear blue blockers in the daytime. Because sunlight is WAY more intense than screens and LED lighting, we recommend blocking all peripheral light. We recommend SafetyBlue's Sleep Savior goggles (no affiliation to us) for that purpose.https://smile.amazon.com/gp/product/B07CZ499J5/

For those of us just using them 1 - 2 hours before bed at nighttime, these work very well.

ASIN	B076YQP6SB
ASIN	B076YQP6SB
Age Range Description	Adult
Apparel Fabric Weight Class	Lightweight
Arm Length	128 Millimetres
Best Sellers Rank	#72,685 in Health & Personal Care ( See Top 100 in Health & Personal Care ) #431 in Computer Bluelight Blocking Glasses
Brand Name	Spectra479
Bridge Width	16 Millimetres
Colour	Nighttime
Customer Reviews	4.6 4.6 out of 5 stars (582)
Date First Available	20 March 2023
Department	unisex-adult
Fit Type	Regular
Frame Material	TR90
Frame Material Type	TR90
Frame Type	Full Rim
Frame Width	130 Millimeters
Garment Size Country	India
Import Designation	Imported
Is Discontinued By Manufacturer	No
Item Dimensions LxWxH	17.8 x 14 x 4.3 Centimeters
Item Shape	Oval
Item Weight	1 Ounces
Item Weight	28.3 g
Item model number	FBB1-RG-19-03
Lens Height	41 Millimeters
Lens Material Type	Polycarbonate
Lens Width	60 Millimetres
Manufacturer	Zendustries, Inc.
Manufacturer	Zendustries, Inc.
Manufacturer Part Number	FBB1-RG-19-03
Material Type	TR90
Net Quantity	1 Count
Pattern	Solid
Product Care Instructions	Clean with lens cleaner. Store in a case when not in use.
Product Dimensions	17.78 x 13.97 x 4.32 cm; 28.35 g
Special Features	UV Protection
Style Name	Computer
Style Number	FBB1-RG-19-03
Target Audience	adults
UPC	602573393697
Unit Count	1 Count
number-of-items	1
size	M

Spectra479 - 99.9% Blue Blocking Amber Glasses for Sleep - Medium Adult Size Nighttime Eye Wear - Special Orange Tinted Glasses Help You Sleep & Relax Your Eyes (Amber)

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