Ray-Ban verified reseller

Product description

  • Oval grey full-rim frames deliver understated elegance
  • Strong yet lightweight metal build
  • Violet bio-based nylon lenses with a classic finish
  • Provides 100% UVA and UVB protection for advanced sun defence

Ray-Ban redefines retro with the RB3757 Kai Bio-Based sunglasses. These oval unisex sunglasses feature soft, rounded contours in sleek grey, infusing timeless elegance with a contemporary edge. Adjustable nose pads ensure a precise and comfortable fit, while the violet classic lenses crafted from bio-based nylon add a pop of bold personality. A perfect blend of lightweight design and unisex style, this modern update is as versatile as it is iconic.

Verify Ray-Ban reseller status

Frame measurements

  • Frame width

    139 mm

  • Bridge width

    15 mm

  • Lens height

    36 mm

  • Lens width

    59 mm

  • Side length

    145 mm

Prescription sunglasses

Our standard delivery service is 7-10 working days pending prescription validation and availability.

Orders under £35 are subject to a delivery charge.

See our delivery page for more information.

Non-prescription sunglasses and accessories delivery

We offer next day delivery as standard. Orders received before 6pm, Monday to Friday, will be delivered the next day*. 

Orders under £35 are subject to a delivery charge.

See our delivery page for more information.

*Postcode exclusions apply.

Returns

Sunglasses and accessories can be returned up to 100 days post purchase for a full refund.

See our returns page for more information.