The Bern Macon 2.0 MIPS Helmet in Retro Forrest Green, size small, is a stylish and protective hard shell helmet designed for road cycling. It features MIPS technology for added rotational protection, making it ideal for unisex adults looking for reliable head protection. With a diameter of 52-55cm, this helmet from Bern is a practical and high-quality choice for cyclists seeking both safety and style on the road.