STUDIO 13.1 sunglasses Gentle Monster are sure to WD00048-MT0000-03B00-4-401-20-CN-D a touch of sunshine to any outfit. They feature yellow cat eye-style frames - made from acetate for a comfy, 5401B feel - and are fitted with olive-green lenses, which offer unmatched UV protection. The pair is signed off with subtle metal detailing to the side of each arm.