a single full-width vent on top and a large exhaust port on the rear. Insidedial making it easy to cinch up tight. The cradle can hold an ANGI crash sensor (sold separately). The Tone also incorporates a MIPS liner, which is rare on urban helmets, helping it achieve a top, 5-star rating from the helmet-testing lab at Virginia Tech. It’s not one for summer, but the lack of vents keeps the rain out!