Lazer Chiru bicycle helmet The Chiru bicycle helmet offers top performance for a very good price. The fully integrated visor keeps sun and rain out of your eyes and the ventilation openings keep your head cool during long rides on singletrack. The TS + retention system with adjustable head basket ensures that the helmet always has the perfect fit. Specifications: Color: black, gray Gender: unisex Outer shell material: plastic Intermediate shell material: styrofoam Inner shell material: mesh Fit model: Turnfit Plus Construction: In-Mold Ventilation: 15 ventilation holes Certification: CE Weight: 305 grams (S) Size: L Head circumference: 58-61 cm