Sierra says: The Betsey Layer Top acts as a great base layer to help protect against sweat and moisture coming in and still allows it to go out so that your body can breathe. It also comes with a built in bra.

Sierra says: This unique looking 686 Cubic Riding Jersey will be a great base layer to go under your jacket. With the thermal technology provided, it gives you a performance dry fabric that wicks away moisture and SPF 30 built right into the shirt. The technology also protects against odor and wicks away perspiration throughout the day.

Sierra says: The Direct Layer Top comes in simple plaid prints or solid colors and is comfortable and sleek. It has a crew neck and a slender fit, and also comes with performance dry material and SPF 30 to protect you all day long.

Sierra says: The Esse Riding Jersey adds some flavor into your base layer with a unique and diverse design on it and a zip up crew neck. It provides all day protection against odor and sweat.

Sierra says: Pull on the lightweight 686 Women's Modern Support Top under your mid-layer and stay warm on frigid pow days. This scoop-neck long underwear top features a built-in support liner for comfort in motion, thumbholes for maximum warmth, and flatlock seams for easy layering. Embroidered accents and contrast stitching separate the Modern Support Top from your boring long-sleeve thermal...

Sierra says: This Sienna Riding Jersey is a simple and fun product from the women's thermal technology line of 686. The zip-up hoodie has a soft performance dry material and includes a unique six eight six design on the sleeve and left shoulder. It's perfect to wear underneath something as a base layer or mid layer or just when you're hanging out. It also helps prevent odor from oc...

Sierra says: The Ziggy Riding Jersey is another great first layer, which is definitely a must-have when you're riding! The Ziggy has a cool zig-zag pattern with a 3-snap up polo collar. It keeps you warm and allows your skin to breathe all day long.

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: The very classic 1/4 zip comes with a longer body than normal so that when you're strapping in you don't have to worry about coming untucked. Great for breathing and staying dry. Comes in tropical green. Burton says: Dry heat for the deepest freeze.

Olympic retro meets new-school high performance

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

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: DRYRIDE Ultrawick and is quick-drying and highly breathable. The Tech flannel also features stink-proof for all of those men out there who need a little help in that department. It also has the always loved chest pocket (pocket protector not included), and has button up closure. Burton says: Party like it's 1994..

Cram this warm, semi-slick layer along for extra insurance against the cold We only carry this thermal in black with red print.

Sierra says: The Acclimate Wool Zip Mock is that wool feeling that we all love...it has scent prevent and quick dry so you will for sure stay dry and smell free when you wear this zip mock.

Sierra says: The Acclimate Wool Zip Mock has that wool feeling that we all love... The breath ability and scent prevent in this mock are amazing, you will never want to take it off. With Quick dry you will stay warm and dry even if you are sweating.