Bern Muse Matte Black/Magenta Helmet w/Black Knit Liner : If your head tends to come in contact with things other than pillows and hairbrushes, you might want to consider the Bern Muse Hard Hat Helmet. This lightweight lid features a cushy Brock Foam interior that, while not certified for severe impacts, can take multiple light to moderate dings without requiring replacement (compare this to Zipmold and EPS foam, which is certified but must be replaced after a single hit).
Brock Foam is not EN/AST/CPSC certified for severe single impacts, but can take multiple, lighter dings without requiring replacement
Sink Fit design fits the lid around your head (rather than perching it on top) for advanced comfort and a low profile
Interchangeable liners facilitate year-round use