3.1 Phillip Lim Round-frame tortoiseshell acetate sunglasses, 3.1 Phillip Lim's round-frame sunglasses have been crafted from tortoiseshell acetate. The left arm is trimmed with gold hardware and engraved with the designer's signature. We love the matte finish - it works just as well with tailoring as it does with beachwear Size: One size. Gender: Female. Age Group: Adult.