Description
An undeniably classic sunglasses shape that's ready for action. The Otus features a solid acetate frame carefully finished with triple barrel sprung hinges to ensure flexibility and a comfortable fit all day long.
Mirrored polarised lenses come with an anti-seawater coating, and provide 100% UVA protection. Making them the perfect adventure companion.
Made with Italian bio acetate; a naturally derived material providing a more planet friendly sunglasses alternative.
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+ Sizing & Fit
- Frame size: Medium- 52mm-20mm-145mm (lens, nose, temples)
This frame is best suited for regular heads (55-59cm). Ideal for many face shapes and nose heights.
+ Shipping
+ Free and fast UK deliveryEstimated arrival 1-3 working days.
+ Free 30 day returns
International shipping calculated at checkout. For more information please visit our Shipping pages.
Please note, occasionally international orders might incur import duty, please check local regulations.
+ The Clarity Range
A sustainable bio-acetate frame, carefully finished with sprung hinges and adjustable temple ends to ensure the best fit. This frame is made with Mazzucchelli cellulose acetate, a naturally derived material made from wood pulp. Providing an eco-friendly alternative to petroleum-based plastics. The wooden temples are made using sustainably certified woods, layered for extra strength and inlaid with our bird motif.
+ Technical Specs
- Frame size: Medium/Large
- 52mm-20mm-145mm (lens, nose, temples)
- Colour: Transparent grey (dusk)
- Gender: Unisex
- Material: Italian Mazzucchelli bio-acetate
- Lenses: Polarised lenses 100% UVA protection (UV400)
- German engineered OBE sprung hinges
- Sustainable Eco-cork case
- Recycled PET glasses cloth and pouch

Delivery via tracked 48hr (Royal Mail) or internationally via DHL.
Customers can return anything within 14 days of the original purchase date to receive a full refund or exchange for another style. Items must be returned in unworn and re-saleable condition.

Bird make pioneering sustainable eyewear. Founded by three brothers on a mission to reframe what really matters; people and planet. Bird seek out or innovate the best sustainable materials for their frames, including certified woods, bio-based acetate, renewable cork and recycled aluminium.
Every pair of Birds gives back through their Share Your Sun partnership with SolarAid. Helping to distribute solar light to families in Zambia and Malawi, replacing the use of fossil fuel burning lamps. In 2020 Bird became the first B Corp Certified eyewear brand in the UK, verified to meet the highest standards of social and environmental impact.