The K2 Stash Helmet is a 380-gram, four-season in-mold helmet that’s brand new for 2015-16. The convertible liner can be easily taken out to make room for beanies or an oversized noggin. Its 360-degree halo fi t system can be fi nely adjusted with a dial for optimal fi t, while a built-in low profi le speaker will keep the tunes bumping for hours.