Big features in a pint sized package.The Nina DVRT features our compass fit dial fit system, DVRT protection padding, and an ultra-lightweight design ensuring maximum comfort and a perfect fit for children ages 5-8. Premium construction, a perfect fit, and adaptability for all seasons. Patented Flip Visor Included. Bern's fresh rotational energy management solution literally DVRT' rotational energy through five layers of patented sliding membranes that rotate omni-directionally during oblique impacts. Efficiently integrated into Bern's liner system, DVRT offers optimal comfort and performance while still delivering Bern's trademark low profile style. Specifications: - Avg. Weight: 310g - Safety Standards: Complies with U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older. EN1078 - Construction: Zipmold+ - Fit System: Compass Fit - Vents: 7