Sandbox Classic 2.0 Park Helmet Asian FitDescription Sandbox Classic 2. 0 is for the go anywhere, try anything rider, built to handle hard impacts, all in an ultra low profile design. The Classic's undercover venting provides maximum air flow for a much cooler ride. How this works.. Sandbox did not want to take away from the look of this helmet by putting holes all over it, so they have created channels in the liner that allow air to flow from the brim and through the front Slash Vent. This