<div class="_help_font_site selected-art-author"> <p>Yes. Total quantity&nbsp;is no more than 4 and you did not use any voucher or promotion on your orders, you can combine them for one shipment and we can refund you part&nbsp;of shipping fee. Please inform us of your order numbers before&nbsp;the orders are shipped by sending email to <a href="mailto:service@firmoo.com">service@firmoo.com</a>&nbsp;informing us that this is a bulk order and list the order numbers on the email.<br /> <br /> <strong>Please note:&nbsp;</strong><br /> <br /> 1. If you have used any vouchers or promotions with your order, you can still combine multiple orders, however we will not refund any part of the shipping fees for the combined orders.<br /> 2.&nbsp;If the quantity of your orders is more than 4 pairs and you have used no discounts, it will exceed the parcel weight and we will not refund any shipping fees.</p> </div>
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Photochromic & Transitions® Lenses Introduction

What is the difference between single-vision and bifocal/progressive lenses?

Do you offer bifocal or progressive lenses?

Do the lenses include any coating?

What is the material of your lens?

Which kind of lenses are free?

Lens Thickness/ Lens Index

Can I buy lenses only to fit into my old glasses frame?

Difference between Spherical Lens and Aspherical Lens

How to choose lenses?

Do you have prism lenses?

What type of bifocal lens do you use?

Lens Color

Spherical VS Aspherical Lens (video)

Lens Functions

What coatings and add-ons do you offer for your lenses?

How to use progressive glasses?

What're the difference between Tint lens, Photochromic lens and polarized lens?

What's the difference between basic coated lenses, standard coated lenses and blue-light blocking lenses?

30-day Return & Exchange
Unsatisfactory glasses can be exchanged or refunded within 30 days of receipt.
6-month Warranty
Covering any possible defect in materials and workmanship.
Live Chat 24/7
We are always online for you.