Sierra Says: This thermal bottom is ideal for the days when you need a warm, waterproof layer to keep you jonesin' in the gnarliest of conditions. Burton Says: Our Warmest First Layer.

Sierra says: Quick-drying and highly breathable with DRYRIDE ultrawick stretch microfleece. Softlock seams for comfort and softwaist logo elastic waistband. Burton says: Packs more heat than Chuck Norris with a sunburn.

Sierra says: These first layer pants keep you all nice and toasty without the unnecessary sweat that goes along with it. Comes with a shorter inseam that won't bunch in your boots and it comes in tropical green to match the expedition zip. Burton says: Protect your buns from freezer burn.

Sierra says: Double-knit closed cell mesh fabric with quick-drying and highly breathability. Stink proof antimicrobial finish and chafe-free softlock seams for comfort. Softwaist logo elastic waistband is ideal for year-round outdoor activity. Burton says: Roast beef, not nuts.

Sierra says: Double-knit closed cell mesh fabric with quick-drying and highly breathability. Stink proof antimicrobial finish and chafe-free softlock seams for comfort. Softwaist logo elastic waistband is ideal for year-round outdoor activity. Burton says: The ankle itch eliminator.

Sierra says: We'll spare you the wet and give you more of the wild.

Sierra says: Get wild under those pants.

Sierra says: 180 degrees of unlimited mobility and a shorter inseam so that there's no worries of being the slightest uncomfortable all day long while you're tearing up the mountain. Comes in tropical brass cupcakes and true black tidal wave print. Burton says: Ready to rock, from the park to the dance floor.

Sierra says: Quick-drying and highly breathable are only two of the features that make this pant comfortable. 360 Of stretch for unlimited mobility. Chafe-free softlock seams for comfort. Softwaist logo elastic waistband is also very soft and comfortable. Burton says: Stokelize your equilibrium all season in any weather.

Sierra says: Ultrawick stretch jersey with quick-drying and highly breathable fabric. Stretch 360 degrees for unlimited mobility. Chafe-free softlock seams for comfort make this one of the most comfortable layers ever. Softwaist logo elastic waistband and shorter inseam also make it perfect for any time of year. Burton says: Just the right length, just the right heat... Enough said!