My most recent helmet is a Trek, now with added Ziptite. That is, it has an adjustable band to keep the helmet on the head. It works pretty well, but we'll see how it does in a year or two. Giro, Trek, Bell all have helmets with adjustable fitting systems. If you wait for a sale at store, you should be able to find a pretty inexpensive helmet that fits. I got this one for $20.