For triathlon and time-trial enthusiasts, here is their new highly innovative, technological product, the result of an intensive, concentrated engineering research project conducted in collaboration with the American aerodynamics.Designed with the aid of legendary aerodynamics, the new CAIRBULL-33 AERO-R1 has undergone extensive wind tunnel testing to become the best TT helmet on the market. Through this testing,CAIRBULL developed a unique tail geometry that works best for all TT positions and back profiles. Proven to beat out most competing aero helmets in time simulations, the CAIRBULL-33 AERO-R1 will be, without question, the best aero helmet on the market throughout the triathlon and cycling worlds. ★ Weight,Sizes & Colors 265 grams without Shield,300 grams with Shield One Size:M/L(54-60cm) 8 ranging colors ★ Construction Outer Shell Construction:In-mold polycarbonate shell with EPS liner Inner Shell:Thermoformed reinforcement shock absorbing polystyrene ★ Fit System Lightweight fit system with an easy-to-turn dial for adjustments ★ Ventilation 4 Wind Tunnel vents with internal channeling ★ Comfort Removable and washable inner padding in Coolmax material- COOLMAX internal pads(cushioning comfort pad) are used in larger surface in contact with the head for increased comfort. Detachable for hand wash and anti-allergenic.Comfort Liner and Chin Pading keeps a good fit No reflective rear sticker ★ Compatibility No ★ Certification CE EN 1078 ★ Accessories Included Accessories of 1pcs Magnetic dazzle shield ★ Super and Comfort Fit ★ Lightweight ★ Magnetic shield can flip up and with switchable dazzle shield ★ Fit with glasses ★ Simplestyle Design with water decal for highlight ★ Helmet comes with 1pcs dazzle shield，3 different Optional shield to be choosed buy( clear, grey, yellow) ★ 1set spare comfort and washable 8mm thichness inner pad
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