Calvin Klein is lauded for understated elegance – case in point: 7378S sunglasses. The rectangle silhouette is crafted from tough gunmetal. This is then paired with temples cut from durable acetate with unique splashes of colour. Metal pins sit at the temples as the frame’s core wire is slightly visible. And lightweight polycarbonate blue lenses bring 100% UV protection to the eyes. Free delivery on orders over £45 at Feel Good Contacts.