Product Description The is aerodynamically optimised The race 8 time trial helmet by uvex helps you save a few watts with its Aero-Vent design. The short teardrop shape and lateral dimples - depressions similar to golf balls - contribute to this. The seamless visor is mirrored and can be hidden inside the helmet when not in use. To ensure that the helmet fits perfectly, you adjust it according to the circumference of your head using the IAS adjustment system. Thanks to the Monomatic ratchet closure, you only need one hand to open and close it. Product Specifications: buckle:ratchet Application:Triathlon & Time Trial Construction:hard shell Air Circulation Vents:2 Type:Half-shell Gender:Women's, Men´s white-black | 56 - 58 cm: Type:Fullface Gender:Men´s, Women's white-black | 59 - 61 cm: Type:Fullface Gender:Women's, Men´s white-black | 56 - 58 cm: Transparency:54 - 54 Filter Category:CAT1 white-black | 59 - 61 cm: Transparency:54 - 54 Filter Category:CAT1 Product Features: aerodynamic time trial helmetAero-Vent design with shortened teardrop shape and side dimples for optimal airflowmirrored magnetic visor closes seamlessly, can be hidden inside the helmet when not in useratchet closure usable with one hand Technology: FAS The Fast-Adapting-System (FAS) strap can be infinitely adjusted to the head and allows for a firm, secure fit. This way, the helmet remains firmly on the head and protects it even in extreme situations such as falls. IAS Adjustment System With the uvex IAS system, helmets can be individually adjusted in width with millimetre precision and in no time at all. The headband remains comfortable and allows good ventilation of the head. Monomatic The Monomatic fastener by uvex is a ratchet fastener that can be opened and closed with one hand at the touch of a button. Manufacturer Number: white-black | 56 - 58 cm: S4109650715 white-black | 59 - 61 cm: S4109650717 Contents: 1 x Manufacturer: UVEX SPORTS GmbH & Co. KG Würzburger Str. 154 90766 Fürth Germany info@uvex.de