Tired of helmets with an almost-but-not-quite fit? Try the Kask K.10 Dieci Helmet. If your head isn't on either extremes of the sizing spectrum, Kask's clever Up-N-Down adjustment system lets you dial in the perfect fit around your skull, and down the back of your neck. The low-profile shell has 19 generous vents which silently channel air over your head and out the back, which keeps you looking pro, and your head as cool as your efforts will allow.

• Sizing runs: 53 - 61cm, 21 - 24in, or 6-5/8 - 7-5/8 for your hat size
  
• Chin strap is made from non-allergic synthetic leather which doesn't hold sweat, and washes easily
  
• Includes its own carry bag for race-day transportation
  
• 100% made in Italy