Groover is in the heart. Mid-oversized rectangular 70's vibin' magic with signature Hot Futures gold plaque. This shape looks amazing on everyone, we can't wait for you to try it for yourself. Handmade from premium gloss black cellulose ECO acetate and fitted with smoke 100% UVA/UVB protected CR39 Cat. 3 lenses. Designed in London. ECO acetate is premium recyclable form of cellulose acetate (made from 90% cotton and other natural materials) and a more sustainable, environmentally friendly form of acetate. One of the highest quality, purest types of cellulose acetate available which uses less chemicals (such as phthalates) in the making process.