Tips:Features: Lightweight; Ductile Metal.
Tips: Not suitable for high prescription. Memory Metal is a kind of bendable and flexible material, which is not easily broken. If you prefer hard texture, please select Metal or Mixed-Material frame.
#YSL366 by Firmoo is a Memory-Metal frame with rubber pads in medium size. This frame comes in a polishing metal finish with sophisticated design. This stylish frame gives you a chic look and all-day comfort.


Select color: Gold (C66-F)

Size Chart

Free Scratch-resistant Lens Coating Included

30-day Return & Exchange

3-month Warranty

One-on-One Service


Weight: 12g
Bifocal/Progressive: Yes
Spring hinge: No
Material: Memory Metal
Frame style: Full Frame
Lens Diagonal Size: 51 mm
Customer Reviews
218 Reviews
by Zoie

So much better than my last order! I had problem with the lens on my last pair, it feels like there is only prescription on the center of the lens. This new pair is so comfortable to wear, super lightweight and clear! It also fits my face a lot more. It stays on my nose

onMar 23, 2020

by Su

I like these glasses. It is so classy but symple.

onMar 23, 2020

Ask A Question
What's the difference between the YSL366 and the Y366M? Thank you! (1 Answer)
Lily on Mar 12 , 2020
Firmoo's reply
Hi Lily, the difference between the frame YSL366 and Y366M is the size. This frame Y366M has the size of 52-19-145(Medium) while this frame YSL366 size is 51-20-143(Narrow). I hope this is helpful. Thanks and have a nice day!heart
on Mar 12 , 2020
My prescription is around -9.00 in both eyes. If I get 1.67 lenses, would that be okay? Would the lenses still bend? (1 Answer)
nay on Jan 14 , 2020
Firmoo's reply
Hi Nay, Indeed, it is ok to choose 1.67 for your prescription, however, we highly recommend to choose a higher lens index to ensure your lenses are as light and thin as possible and with a short and narrow plastic frame. Please check this link: for your reference. Thank you. heart
on Jan 14 , 2020

Order placed

processing time
5-7 business days


shipping time
5-7 business days


Processing Time

Product TypeTime
Non-Rx1-2 business days
Single vision2-3 business days
Blue-light blocking3-5 business days
Driving3-5 business days
Bifocal/Progressive3-5 business days
Tint/Mirror3-5 business days
Photochromic/Polarized lenses5-7 business days

Processing time might be longer based on your lens complexity.

Shipping Time

Country / RegionShipping MethodEstimated Delivery
USStandard Shipping (USPS)6-10 business days after processing
Express Courier Service5-7 business days after processing
United KingdomStandard Shipping10-15 business days after processing
Express Courier Service5-7 business days after processing
CanadaExpress Courier Service3-5 business days after processing
Other CountriesExpress Courier Service5-7 business days after processing

Delivery time may be affected in holiday seasons.

Normally the parcels will be delivered to you sooner than above time.

3-Month Warranty: Customers will enjoy a 3-month warranty (3 months of receiving), covering any possible defect in materials and workmanship. This warranty does not cover damage caused by accidents, negligence, or improper care.

30-Day Exchange & Return: Unsatisfactory glasses can be exchanged or refunded within 30 days of receiving. Only shipping fees will apply. Each order is eligible for a one-time exchange/return. Please kindly note we could not make an equal exchange/return for entering wrong prescription.

Firmoo's friendly exchange&return policy promises our customers 100% satisfaction. Please log in your account center to apply for the exchange&return. Once we received your request, your exclusive CSR will email you to solve the issue.


Toll-Free: 1-855-487-6006