Enhanced Safety with MIPS Technology: Built with Multi-directional Impact Protection System (MIPS) to help reduce rotational forces during impact Adjustable Fit Dial System with Reflective Dial: Easily customize the helmet's fit for a secure, personalized feel; includes two sets of fit pads and a chin strap with side release buckle to fine-tune comfort and ensure the perfect fit Durable Vented ABS Shell: A tough outer shell and subtle brim features strategically placed vents, delivering high-impact protection, lightweight performance, and excellent airflow—perfect for urban riding Versatile Sizing Options: Available in three sizes - XS/S fits 18.9 – 21.3 in (48– 54 cm), S/M fits 21.7 – 22.8 in (55 – 58 cm), L/XL 23.2 – 24 in (59 – 61 cm); manufacturer’s 180-day warranty Top Notch Safety: Triple-certified to meet U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older, ASTM F1447 for Recreational Bicycling or Roller Skating, and ASTM F1492 for Skateboarding and Trick Roller Skating