According to face matching data, the “small round sunglasses” face matching rate of oval-faced and heart-shaped people is as high as 89% (Fashion Optics 2023 report), and the diameter of 45-50mm can cut the cheekbone vision by 12% to 15%. The 3D facial scan showed the radius of curvature of the circular frame (R=75mm±5mm) to be very close to the average Asian female facial shape (136mm zygomatic arch distance) with ±2.3mm accuracy, much greater than the ±6.7mm for the square frame. It is said that 82% of the buyers of this kind of face mask believe that it can change face shape satisfactorily, especially among the population of long faces, satisfaction rates are as much as 94%.
Protection from uv performance is excellent. The ones with a UV400 nanometer coating (i.e., Ray-Ban RB3548N) block 99.7% UVA/UVB (transmittal ≤1%), and the lens arc 8-base bend design improves the rate of edge glare removal to 92% (68% for standard flat lenses). At 3,000 meters, this lens lowered snow blindness incidence from 23% to 2.1%, and the comfort rating of outdoor exercise participants for four hours was 8.9/10 (6.2/10 for regular sunglasses).
Market data in the fashion industry validates classic status. In the Gucci 2023 early spring series, the small round frame is shown 9.3 times (average of other frames is 3.1 times), and the total exposure of the social media hashtag #SmallRoundSunglasses is over 5.4 billion times. LVMH Group’s financial report shows that the annual sales of Dior’s So Stellar round frame model exceeded 800,000 pairs, with a re-purchase rate of 32% (cat eye model only 18%), and its titanium metal frame (weight 9g) extended the daily wear time to 5.7 hours (4.2 hours of similar products).
Material innovation improves durability. Frida series by Gentle Monster utilizes β-titanium alloy hinge (bending strength 1200MPa), opening-closing cycle more than 30,000 times (industry level 15,000 times), and 1.2mm ultra-thin nylon lens (Abbe number 58) to achieve optical distortion ≤0.3% (ordinary resin sheet 1.2%). Lab test shows that the elastic modulus of the mirror leg is 110GPa, and can accommodate 94% of the head circumference dimension (54-62cm), with the standard deviation of the pressure distribution as low as ±0.8N/cm² (industry average: ±2.3N/cm²).
Consumer market feedback reveals underlying values. Global annual sales were $2.8 billion (67% of the round frame sunglasses market) with 78% sales generated from women between 18-35 years of age. According to data from a premium brand, consumers buying the “small round sunglasses” buy 1.7 pairs per annum, 42% higher than other categories. Price range analysis shows that the $200-500 mid-price product offers the best cost performance (38% BOM cost ratio), and its frame plating process (12μm thickness) has corrosion protection of 5 years (fast fashion products have only 1.2 years).