Inspired by Atomic’s World Cup pro helmet, the Redster CTD delivers top-tier protection for serious amateur racers. Featuring a FIS-certified ABS Racecase and AMID (Atomic Multi-directional Impact Deflector) technology, it provides up to 30% higher impact protection than FIS RH 2013 standards require. What sets the CTD apart is Shocksense: a built-in sensor that links to the Atomic Shocksense app, giving you real-time impact data and helmet condition updates. In the event of a hard crash, it can even send an SOS alert with your GPS location to emergency contacts. With the 360° RS Fit System, Live Fit pads, and a RS Full Cap Liner, the Redster CTD offers a race-ready fit that stays secure and comfortable—even under extreme pressure. Key Features: FIS RH 2013 certified for elite-level race safety AMID technology delivers 30% higher impact protection Shocksense system for real-time helmet diagnostics and emergency alerts 360° RS Fit System with customizable Live Fit pads Magnetic Fidlock® buckle for glove-friendly use Acoustic ear plates for enhanced hearing RS Full Cap Liner with integrated 3D-molded ear pads for a snug, one-piece fit .size-chart-wrap { max-width: 720px; } .size-chart-title { font-family: Arial, Helvetica, sans-serif; font-size: 18px; font-weight: 700; color: #111; margin: 0 0 12px; } .size-chart-table { width: 100%; border-collapse: collapse; font-family: Arial, Helvetica, sans-serif; font-size: 15px; } .size-chart-table th, .size-chart-table td { padding: 10px 12px; border-bottom: 1px solid #e6e6e6; text-align: center; vertical-align: middle; } .size-chart-table th { font-weight: 700; color: #111; background: #f6f7f9; } /* Mobile horizontal scroll */ @media (max-width: 640px) { .size-chart-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; } .size-chart-table { min-width: 520px; } } Redster Size Chart Size S M L XL Head Circumference (cm) 51–55 55–59 59–63 63–65
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