Kask K-31 Chrono Time Trial Helmet-Silver-Without Visor As Worn By Us! And Team Sky. Built to personify the patented CSD, Comfort-Safety-Design philosophy, Kask's K-31 Chrono delivers high levels of protection so you can forget about your head & get on with pushing yourself onwards. CHARACTERISTICS • Silk-screen processed polycarbonate external shell, inner made from polystyrene • “UP’NDOWN TECHNOLOGY” size adjustment system. This system allows size adjustment even with the helmet fastened on the head acting either by turning the screw or in a faster way by pushing the two flaps towards the centre. • Thermoforming chinstrap in nylon with quick removable buckle provided of reflectors, label “100% Made in Italy”. Chin pad protection in anti-allergic leather, adjustable in length & washable • Inner pad made from two layers in Cool Max & an open cells filter, is divided in 3 pieces in order to facilitate its removal & its replacement in case of cleaning. • External ear protection in smooth Coolmax, removable & washable • Available with or without visor. Colours available: clear, red, smoke grey • Single adjustable size 53-61 / XS-XL • Weight: 280 g • Smooth rubber border