Availability: 5 in stock
The Ray-Ban Kai RB3757 sunglasses bring a fresh take on ’90s-inspired oval frames with modern sustainability built in. These unisex metal sunglasses feature a sleek, narrow oval shape that works especially well on smaller faces—a fit that’s hard to find in many contemporary designs. The full-rim stainless steel frame comes in polished gold, gunmetal, and silver finishes, each paired with color-contrast temple tips that add a subtle edge to the classic silhouette.
Ray-Ban engineered the Kai with bio-based polyamide lenses containing 40% renewable carbon content sourced from castor oil. These lenses deliver excellent optical clarity and 100% UV protection while reducing reliance on fossil-based materials. Available in solid green, dark violet, dark grey, and mirrored yellow flash gold, plus a polarized azure option, the lenses offer both style variety and real sun protection. The bio-polyamide material is lightweight, impact-resistant, and provides sharp vision without the chromatic distortion found in lower-grade plastics.
The RB3757 measures 56mm or 59mm lens width with a 15mm bridge and 145mm temples. Adjustable nose pads let you dial in the perfect fit, and the single-bridge design keeps the look clean and minimal. These frames are prescription-ready, so you can add your Rx lenses without sacrificing the design. The oval shape is versatile enough for everyday wear but distinctive enough to stand out—a balance Ray-Ban has refined over decades.
Whether you’re drawn to the retro vibe, the sustainable materials, or simply need a quality pair of metal sunglasses that fit a smaller face, the Kai RB3757 delivers on all three fronts.
