Sport Direct Women's Vapour Bicycle Helmet - Pink/Black/Silver, Size 56-58 Helmet Size: 56-58cm, There Are An Amazing 22 Air Vents for maximum cooling (Including 5 Rear) A Unisize Adjustment Headlock System At The Rear Of The Helmet Allows You To Make The Helmet The Perfect Fit Yourself The Helmet Includes A Padded Chin Strap Buckle Protector For A Comfortable Fit Around Your Chin The Helmet Has A Mesh Liner Over The Front Ventilation Holes To Protect From Wasp And Bee Stings The Helmet Also Includes A Visor, The Helmet Is TUV Tested and conforms to EN 1078 standards