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: The perfect remedy for Armageddon-like temperatures, this top is not only uber warm but also very breathable. Burton Says: Our Warmest First Layer.

Sierra says: This fleece is quick-drying and highly breathable. Stretch 360 for unlimited mobility and stink-proof antimicrobial finish. 1/4 Zip venting with super soft zipper guard at chin. Burton says: For the double-digit sub-zero 20 minute life ride.

Sierra says: The ultimate winter warrior.

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.

Olympic retro meets new-school high performance

Sierra says: Who doesn't love polka dots?? The Burton Lightweight Henley Thermal comes with the cute and accessible button down design.

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 breathable fabric. Strap in without your shirt un-tucking. Ribbed cuffs and collar, ideal for year-round outdoor activity. Burton says: Dry is fly.

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: Core comfort with a little bit of glam and style. The Burton Lightweight women's thermal crew comes in a fun and intricate design that will provide you with dryness and comfort all day long.

Sierra says: Breathe easy with the Burton Lightweight women's thermal crew. Comes in fun and colorful designs that allow you to stay warm and dry no matter what the conditions.

Sierra says: Comes in a very fun and cute tropical brass cupcakes print and true black tidal wave print. Either way you can have a lot of fun in these layers. These truly are the frosting on top of the cupcake. Burton says: Kiss pit puddles goodbye.

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

Sierra says: Get wild under those pants.

Sierra says: This one piece is the ultimate suit to rock and cozy up to on those chilly winter nights. It features cute and classy gathered details on the chest with buttons, and comes in azul blue. Burton says: Uniform warmth with button-flap bathroom convenience.

Sierra says: Quick-drying and highly breathable are only two of the features that make this shirt comfortable. 360 Of stretch for unlimited mobility. Chafe-free softlock seams for comfort. Burton says: Not too hot, not too cold... it's just right.

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: Ride it, rage it, then roll into bed.

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!

Sierra says: Comes extra long to stay tucked into your pants all day long. Features in a multi polka square pattern that is fun and colorful. Look great, even under all the layers. Burton says: Heat up the polka party with this great layering v-neck.

Sierra says: Set your climate control to auto.

Sierra says: Quick-drying and highly breathable this Union Suit is also very comfortable with 360 degrees of stretch for unlimited mobility. Stink-proof and Chafe-free softlock seams for comfort. Button up front and bomb drop butt flap are also very important features. Burton says: The infamous Dutch Oven

Sierra says: Fun, stylish and ready to wick away and unwanted moisture!