Free standard shipping and returns on all orders


What is your return policy?

If you are not 100% satisfied, you can exchange or return your items for free within 14 days from shipping. However, you can only exchange for free once.
We provide a 12-month warranty for all our products. The warranty includes, only when it is due to our quality problems, particular eyewear part replacement, lenses replacement, return, and exchange. Please note that customers will be responsible for the shipping cost after 14 days. Extra charges may apply if you place new orders. For more details, please contact our customer service representative for professional help.

To complete your return, we require your order number and member ID .

To return your product, you should mail your product to: J&S Sincere Company(Customer Return), 33 Hammond Unit 210, Irvine CA 92618.

You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund.

Depending on where you live, the time it may take for your exchanged product to reach you, may vary.

If you are shipping an item over $75, you should consider using a trackable shipping service or purchasing shipping insurance. We don’t guarantee that we will receive your returned item.

What is your refund policy?

Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.
If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.

Do you have a warranty?

If you feel there is a manufacturing error, return the glasses for inspection within the 30-day warranty period. If our inspection shows the glasses were made incorrectly, we will remake them for you at no charge. Defects in the anti-reflective (AR) coating and photochromic films are warrantied for one (1) year from the date of receipt. This warranty does not cover normal wear and tear to the frames, lenses, or coatings.

I want to return my glasses. How do I get an RA number?

If you need to return an item, follow the simple steps below:

Call, chat, or email us within thirty (30) days of receiving the item to get your return authorization (RA) number.

These items must be included in package:

  1. The eyeglasses, and any accessories, in the hard plastic case that contained the glasses.
  2. A note with the RA# and a brief description of the issue that caused you to return the glasses.
  3. A copy of the prescription that the eye dr. provided, so we can inspect the glasses and determine if they were made according to the prescription.

Returns should be sent to the address provided with your RA number. To receive a replacement order, glasses must be returned in their entirety (frames, lenses, eyeglass case, etc.)

You must pay the shipping fee to mail the glasses to us. If the glasses are found to have a manufacturing defect, we will refund $2.50 of your shipping fee.

I sent my glasses back. What is next?

If you sent them back for inspection, we will inspect them and email you the inspection results. If you sent them back for refund or store credit, we will email you when we have processed the refund or the credit.

Can I exchange the items received?

We only replace items if they are defective or damaged. If you need to exchange it for the same item, send us an email at and send your item to:

Sincere Company(Customer Return) 
33 Hammond Unit 210, Irvine, CA 92618



Your cart

Your cart is empty

Check out these collections.

What are Progressive Lenses? - LifeArtVision

What are Progressive Lenses?

Progressive lenses, often referred to as multifocal lenses no-line bifocals are a modern solution designed to provide clear vision at all distances, seamlessly transitioning from near to far without the need for multiple pairs of glasses or noticeable lines. 

Progressive lenses are advanced eyeglass lenses that offer a smooth progression of prescription strengths, allowing you to see clearly at all distances: up close, at arm’s length, and far away. Unlike traditional bifocals or trifocals, which have visible lines separating different prescription strengths, progressive lenses feature a gradual change in power from the top to the bottom of the lens. This design makes them more aesthetically pleasing and eliminates the abrupt shifts that can be disorienting or distracting.

How Do Progressive Lenses Work?

The key to the effectiveness of progressive lenses lies in their design. They are divided into three main zones:

Distance Vision: Located at the top of the lens, this area provides clarity for activities like driving or watching a movie.

Intermediate Vision: Found in the middle portion of the lens, this zone is ideal for tasks such as computer work or reading sheet music.

Near Vision: Situated at the bottom of the lens, this area is optimized for activities like reading a book or examining fine print.

By smoothly blending these three zones, progressive lenses enable wearers to shift their gaze naturally without experiencing the visual jumps that occur with traditional bifocals or trifocals. This feature makes progressive lenses particularly beneficial for individuals who require clear vision across multiple distances throughout their day.

Advantages of Progressive Lenses

Natural Vision: Progressive lenses mimic natural vision by allowing wearers to seamlessly adjust their focus based on their current visual needs.

Cosmetic Appeal: With no visible lines or segments, progressive lenses offer a more youthful and aesthetically pleasing appearance compared to bifocals or trifocals.

Convenience: Instead of switching between multiple pairs of glasses for different tasks, wearers can rely on a single pair of progressive lenses for comprehensive vision correction.

Adaptability: While there may be an adjustment period as you get used to progressive lenses, many people find that the benefits of clear, multifocal vision outweigh any initial challenges.

In conclusion, progressive lenses represent a significant advancement in eyewear technology, offering wearers a seamless and effective solution for clear vision at all distances. Whether you're navigating your daily commute, working on a computer, or enjoying a good book, progressive lenses can enhance your visual experience while maintaining the aesthetic appeal of your eyeglasses. Embrace the clarity and comfort that progressive lenses provide, and see the world with newfound precision and ease.

Image Credit: Cleveland Clinic
Previous post
Next post
Back to News

Leave a comment

Please note, comments must be approved before they are published