Zeal Optics is a boutique line of sunglasses, based in Boulder, Colorado, that was created to stand out from the indistinguishable masses of other performance frames. Zeal takes pride in its ability to constantly evolve and embraces the desire to be different. Zeal’s passion is driven by the need for adventure and the focus on the journey more than just the destination. All of Zeal's sunglasses frames are made with a patented Z-Resin™ material, which is made from castor beans and not crude oil, so they help adventurers enjoy the environment and take care of it as well.Zeal Optics Ace is a Full Rim frame for Men and Women, which is made of Zeal 100% Cotton.Zeal's cotton frames are 100% biodegradable and are made from US grown cotton. Italy's renowned Mazzuccchelli family uses generations of experience to turn the US grown cotton into a comfortable, easy to wear, and truly green sunglasses. This model features a Rounded Edges shape, with a Single Bridge.The Zeal Optics Ace Sunglasses feature the following logo: Zeal logo on templeThese Sunglasses work well for people whose style is: Classic, Retro/Vintage, Cool/Trendy.Ideal for usage with: Fashion, Sports, Water Sports, Golf, Tennis, Snow Skiing, Beach Volleyball, Cycling, Jogging, Everyday Driving, Water Skiing, Swimming, Fishing, Salt Water, Fresh Water, Baseball.Zeal Optics Ace Sunglasses come with a cleaning cloth and protective carrying case.These sunglasses are available with polarized lenses on certain colors. Polarized lenses have a filter within the lens that blocks the wavelengths of light that cause glare. They can greatly enhance contrast and allow for greater depth of vision, especially in water. They are ideal for any situation where glare reduction is necessary, like driving or playing sports.