Bike Helmets and skateboard helmets are slightly different. Bike helmets are usually lighter and much more closely ventilated and will incorporate components just like a visor or rear LED light. The second connecting member 45 revealed in FIGS. 6 and 7 is connected to a third connecting member (not shown) https://spencertdjgp.total-blog.com/the-5-second-trick-for-which-is-better-honda-shine-or-hero-splendor-plus-67065472