Men's Round Sunglasses

Men's round sunglasses combine classic vintage geometry with modern material engineering. Built for optical distributors, apparel brands, and retail chains, our collection balances structural integrity with ergonomic wearability. Production lines handle both established retro silhouettes and contemporary slim-profile round frames, utilizing precision CNC cutting and hand-polishing techniques. Every batch meets international UV protection standards and mechanical durability benchmarks.

Geometric Balance: Precise 1:1 lens-to-bridge proportion engineered for optimal facial load distribution.

Reinforced Core-Wire Temples: Stainless steel core wire embedded within acetate temples allows custom heat adjustment without frame warping.

Multi-Barrel Hinges: 3-barrel to 7-barrel integrated steel hinges tested for 10,000 continuous open-close cycles.

Ergonomic Bridge: Integrated or adjustable titanium nose pads designed to prevent slip during extended wear.

Laser-Etched Branding: Micro-laser engraving available on temple tips and upper lens periphery for crisp, permanent logo placement.

Optical performance depends directly on raw material selection and coating integrity. Production supports multiple lens configurations tailored to end-user environments:

Structural stability begins with raw material grade and traceability. Material options and mechanical tolerances include:

Cellulose Acetate (Plant-Based): High-density cotton-pulp derivative sourced from certified suppliers compliant with EU REACH regulations. Dimensional stability maintained at temperatures from -20°C to 60°C. Finished with 72-hour barrel tumbling for a smooth touch.

Stainless Steel (Grade 304 / 316): Chemical-resistant, hypoallergenic metal frames with a wall thickness of 0.8mm to 1.2mm, balancing minimal weight with structural rigidity.

Titanium (Beta-Titanium / Pure Titanium): High tensile strength-to-weight ratio. Corrosion-resistant against perspiration and saltwater exposure.

Standard Dimensional Tolerances: Lens groove depth +/- 0.05 mm, bridge width +/- 0.1 mm, overall frame width +/- 0.5 mm.

Compliance Standards: ISO 12312-1 (Eye and face protection - Sunglasses for general use), ANSI Z80.3 (U.S. non-prescription sunglasses standard), EN ISO 14889.

Drop Ball Test: Lenses withstand a 16mm steel ball drop from 1.27 meters without shattering (per FDA 21 CFR 801.410).

Hinge Fatigue Tolerance: Zero structural failure or loosening observed after 10,000 actuation cycles on automated test rigs.

Corrosion Resistance: Metal components pass 48-hour neutral salt spray testing (ASTM B117) without surface pitting or oxidation.

Weight Distribution: Optimized center of gravity positioned 15mm behind the bridge apex, reducing nose bridge pressure marks.

Pantoscopic Tilt: Set at 8 to 10 degrees factory default to match natural facial contours and prevent cheekbone contact.

Temple Curvature: Ergonomic 45-degree inward curve at the terminal tip ensures secure retention behind the mastoid bone without pinching.

Optical Retail Chains: Private-label stock ready for prescription (Rx) lens integration.

Apparel & Fashion Brands: Trend-driven seasonal collections matching specific pantone colorways and custom temple cores.

Outdoor & Lifestyle Brands: Polarized variants configured for glare reduction near water, snow, and urban concrete environments.

Corporate Merchandising: Custom-branded frames manufactured for large-scale promotional distribution.

Production infrastructure handles complete end-to-end custom manufacturing requirements from technical drawings to bulk delivery:

Tooling Development: In-house CNC mold creation for custom frame shapes, bridge designs, and proprietary hinge housings.

Color Matching: Custom acetate lamination, pantone-formatted frame spraying, and vacuum ion-plating (IP plating) for metal finishes (Gold, Gunmetal, Rose Gold, Matte Black).

Private Labeling: Laser engraving, pad printing on temple interiors, custom metal badge embedding, and laser-marked lens signatures.

Minimum Order Quantity (MOQ): 300 pieces per model/colorway for standard catalog adaptations; 600 pieces per model for custom tooling molds.

Factory operations utilize integrated production lines spanning raw material CNC cutting, barrel polishing, hand assembly, and optical testing.

In-Process Quality Control (IPQC): Dimensional checks performed every 100 units during CNC milling and temple assembly.

Lot Traceability: Pre-production physical and optical samples are retained securely on-site for 2 full years to ensure complete production batch accountability.

Optical Inspection: 100% automated lens meter testing to verify focal length, prism imbalance, and UV cutoff wavelengths at 380nm-400nm.

Finishing & Assembly: Automated ultrasonic cleaning removes machining oils, followed by manual alignment verification using optical alignment jigs.

Individual Protection: Each frame is encased in a polyethylene sleeve, packed in a microfibre pouch, and secured within a rigid collapsible hard case.

Master Carton Specifications: 5-layer corrugated export cartons containing up to 100 units, separated by internal cardboard dividers to prevent transit compression.

Logistics Support: Factory direct shipping via FOB, CIF, or DDP terms, with palletized options available for ocean freight and secure air courier partnerships for rush sample dispatches.

To receive a detailed quotation including volume-tiered pricing, freight estimates, and technical data sheets for your specific project requirements, please specify your target frame material, lens specification, and estimated order quantity.

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