展开Baby Nutty Bike Helmet, Baby Shark design. Fits head sizes from 47 to 50 centimeters. MIPS low-friction lining to protect baby's brain from shock: the diaper slides 5 to 15 mm in all directions on impact, reducing the forces on the brain. Lightweight polycarbonate outer shell designed to withstand the pressure of baby's neck. Updated Fidlock® snap-and-go magnetic loop system to prevent pinching. 11 profiled air vents for efficient cooling. Three-part, heat-sealed cushion set and GROW Flex Fit system that envelops the head and provides individual fit and comfort. Designed, tested and CPSC-certified for children aged 1 year and older. In addition to protecting baby's head from bike bumps with technologies such as MIPS lining and the GROW Flex Fit system, the Baby Nutty helmet has an adorable fancy design that will make your little ones crack!.