O'S OPTICAL
Force
Force
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Force is built for focused outdoor movement, combining a lightweight polymer frame with a secure wraparound shape for dependable coverage. Weighing just 20 g, it offers a stable yet comfortable fit for driving, cycling, hiking, and daily sun protection.
The polarized lenses help reduce glare from roads, water, and bright outdoor surfaces, while UV protection keeps your eyes shielded during everyday activity. Available in two color options, Force delivers a clean athletic look with practical all-day performance.
Specifications:
• Model: 3089
• Material: Polymer
• Weight: 20 g
• Lens Width: 60 mm
• Bridge Width: 16 mm
• Temple Length: 135 mm

Discover Our Eyewear Care & Service
Online Prescription Glasses Process

Choosing the Right Lens
- 0 to -2.00 diopters (mild prescription): 1.56 index recommended
- -2.00 to -4.00 diopters (moderate prescription): 1.61 index recommended
- -4.00 to -6.00 diopters (strong prescription): 1.67 index recommended
- Above -6.00 diopters (very strong prescription): 1.74 index recommended
Important Note:
* Prescription strength may also be shown as “sphere (SPH)” in your eye test results. For example, -2.00 SPH ≈ -2.00 diopters
* No Prescription (Frame Only): Your glasses will arrive with acrylic demo lenses. These lenses may feature printed brand specifications and are intended solely to maintain the frame's shape. They are not designed for daily wear. We recommend visiting a local optician to have them replaced
* CR39 Index Options: If you select any CR39 option (1.56 - 1.74), your glasses will arrive with premium, crystal-clear optical lenses. These are custom-fitted, free of any printing, and ready for immediate wear

Protected & Thoughtfully Packaged

FAQ
Can I add prescription lenses to these frames?
Yes. Most O'S OPTICAL frames can be fitted with prescription lenses, except for selected sunglasses styles. If you are not sure whether a frame supports prescription lenses, please contact us before placing your order.
Can I send my prescription after ordering?
Yes, absolutely. You can provide your prescription details after placing your order. To ensure accuracy, simply send a clear copy of your optical prescription along with your order number through any of the following channels:
- Email: osoptical.contact@gmail.com
- Live Chat: Located in the bottom right corner of our website
- WhatsApp: +852 6444 2918
How long does shipping take?
Standard shipping generally takes 5 to 15 business days. Our products are dispatched directly from our facilities in Hong Kong or mainland China. If your order includes customized prescription lenses, please allow an additional 3 business days for our opticians to precisely craft and fit your lenses before the order is shipped.
What if the glasses do not fit?
We offer a 30-day return and exchange policy. If you purchase sunglasses or non-prescription frames, you can return or exchange them within 30 days of receipt, provided they have no obvious signs of wear and are in their original condition.
However, please note that prescription lenses are custom-made to your specific visual requirements; therefore, they are non-refundable and cannot be exchanged once crafted. If you experience any issues with the fit or your new prescription, please reach out to our customer service team, and we will gladly assist you in finding a solution.
Product FAQ
- Are Force sunglasses polarized?
Yes. Force features polarized lenses designed to reduce glare from reflective surfaces such as roads, water, and outdoor pavement. - Do Force sunglasses offer UV protection?
Yes. Force sunglasses include UV protection for outdoor use, driving, sports, and everyday sun exposure. - What activities are Force sunglasses suitable for?
Force is suitable for driving, cycling, hiking, travel, and daily outdoor wear. Its wraparound shape helps provide stable coverage and a secure fit. - What is Force made from?
Force is made from lightweight polymer, offering durability, comfort, and an athletic feel for regular outdoor use.