MET X ION Scrub Amp Helmet: Fullface helmet for enduro & downhill-oriented mountain biking. The MET X ION Scrub Amp is the budget-friendly choice for those who thrive on fast runs. Safety features such as a flexible visor or Safety Release ensure that you can focus solely on the trail in front of you. In addition, the ventilation system and the breathable chin strap ensure that you keep a cool mind in any situation.