A stylish kids' helmet with WaveCel, a leading helmet technology in the protection against cycling-related head injuries. A stylish kids' helmet with WaveCel, a leading helmet technology in the protection against cycling-related head injuries. A major advancement in the protection against cycling-related head injuries A major advancement in th Safety has never looked so cool. Jet is a kids? bike helmet with skater-inspired style, WaveCel technology and a parent-approved price. Safety has never looked so cool. Jet is a kids' bike helmet with skater-inspired style, WaveCel technology, and a parent-approved price. WaveCel is a collapsible cellular structure that lines the inside of the helmet. This Bontrager-exclusive technology disrupts the safety standards that the industry has accepted for over 30 years. WaveCel is a collapsible cellular structure that lines the inside of the helmet. Th...