the nelson frame continues to be a monokel bestseller, year after year. maybe its the soft rectangular lenses. or maybe its the powerful versatility. designed to complement a wide range of face shapes, the easy-to-wear style is handcrafted with unwavering dedication to premium craftsmanship. the making of the havana acetate is truly an artisanal process. first, monokel makes small colored pellets of various hues of yellow, brown and orange by mixing organic color powder with raw biodegradable cellulose acetate. the result is a highly durable, hypoallergenic material, made from renewable resources. the colored acetate pellets are then mixed and stirred by hand to achieve their speckled havana pattern, thus making the pattern on every frame unique - no two pairs alike. grey lenses are known for their classic style and versatility. theyre great for reducing glare on both sunny and cloudy days, while also providing anti-fatigue benefits. grey lenses have the added benefit of allowing true color perception - showing the color of objects in their purest form. all of monokel's lenses feature anti-scratch and anti-reflective treatment with 100% uva/uvb protection. made by renowned german lens- and optics manufacturer carl zeiss. frame width: 137.3mm | frame height: 48.7mm | lens width: 46.3mm | nose width: 24.1mm | temple length: 145mm - handcrafted from organic- and biodegradable acetate - 100% uv protective carl zeiss vision cr39 lenses - 5-barrel obe stainless steel hinges - teflon covered hinge screws - keyhole nosebridge - rectangular rivets on front - includes protective case, cleaning cloth and box for storage Nelson Sunglasses - Havana