Shoei's new J.O helmet combines retro and modern in a simple design. The Advanced Intergrated Matrix shell makes this helmet lightweight and tough enough for anything the road throws at you. It comes in 3 shell sizes with removable insides to make cleaning quick and easy. Combine that with a 3 position drop down visor and you're ready to go. Simple in it's design, and backed with Shoei's construction and protection you already trust. There's really no question to which 3/4 shell you should choose.