Our RUDIMENTARY 51 sunglasses are handcrafted to last and offer a slightly rounded vintage aesthetic. This unisex sunglass with refined European proportions will look great on all face shapes and is designed with unique keyhole-shaped detail on the nose bridge and finished with discreet heritage metal rivet detailing on each end piece. Also available in a slightly smaller optical edition, RUDIMENTARY 49. Crafted from bespoke yellow marble-textured acetate with tonal lenses. Carefully crafted from handmade cellulose acetate with a luxurious touch and comfortable fit. Fitted with premium CR-39 lenses which offer superior optical clarity, and provide 100% UVA / UVB protection.