If you’re looking for a small way to make a difference, take note: British retail chain Topshop has collaborated with sustainable fabric company Bionic Yarn on a three-piece denim collection inspired by the 1970s. Included: a lumberjack jacket, a pair of bellbottom jeans, and a pair of cuffed shorts. The best part? Not only are the pieces made from sustainable fabric—created from plastic bottle fibers, naturally—they also are designed to improve with age—it doesn’t get any better than that! You can find the Bionic Yarn x Topshop collaboration in select Topshop stores as well as online at Topshop.com. Prices start at $70.