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I just placed several orders. Can I pay only one shipping charge?
Yes, if you contact us within the first 24 hours after you've placed these orders, we will refund one shipping fee so that you only pay for one shipping. The orders may be shipped together or separately. Note: The orders used limited coupon sales excluded. For example, welcome sale limit 1 pair/per person, two orders cannot be charged for one shipping.
What do I do if my package was damaged?
Immediately contact our Customer Service department. We will work with you to get your damaged glasses replaced with a new pair as soon as possible.
Do you offer expedited shipping?

Yes, we offer Express Shipping to the following locations (must be a physical address, cannot be a PO Box):

US (All 50 States)

  • Express Shipping (USPS/UPS/FedEx) Estimated Delivery: 7-10 days $19.95


  • Express Shipping Estimated Delivery: 7-10 days $28.95

Where are you located?
We have two main warehouses: One in Castro Valley CA US. Another one in Danyang city, Jiangsu, China. Our manufacturing center is in Danyang city, Jiangsu, China, the same place as our competitors, like zennioptical, eyebuydirect and ,etc
How do I return or exchange it?
We are very sorry to hear you are unsatisfied with your glasses. In order to return your glasses please contact us [email protected] * For international orders, we will provide you with a return shipping address. ** Please allow up to 30 days for store credit to be emailed to you or for your refund to be transferred back to your account.
How Can I track my order?
When the order is shipped, Sllac system will send out a shipment confirmation email, including tracking no and tracking URL. You can also login to using your account and find them at the order detail page. Usually, will ship the order after 2-5 working days after you pay it. If you do not find the email, please check your trash box or you can contact us by email/chat/phone +1 (831)-888-0086. The tracking URL in the mail is the official tracking URL owned by the carrier, you can also use to track your package, 17track is an all-in-one tracking system which can track almost all of the carrier's tracking no and may display more details information.