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Add these to your packing list.

Fromtraditional long johnstoUniqlos fan-favorite HeatTech line, heat-insulating clothing is essential.

Heat Tech Clothing Roundup tout

Credit:Travel + Leisure

Just ask my mom, a lifelong Chicago teacher who swears by herHeatTech turtleneckandKnitted Tightsfor below-freezing recess duty.

Best of all, prices start at just $20.

Theyre stretchy, moisture-wicking, and lined with fleece to keep you warm and comfortable no matter the activity.

Amazon TELALEO 4 Pack Women’s Thermal Shirts

Amazon

It wicks moisture and preserves body temperature to keep you comfortable during outdoor activities.

Eddie Bauer Mens Faux Shearling-lined Thermal Henley

Eddie Bauer

Who says functional clothing cant look good?

This thermal henley is lined with faux shearling, so it will keep you toasty no matter the conditions.

Thermajane Long Johns Thermal Underwear

Amazon

Needless to say, if youre heading to a freezing destination, this henley is a no-brainer.

In addition to heat-insulating technology, they feature an odor-eliminating design.

Plus, they come in three different colors to pair with any outfit.

Amazon Thermajohn Long Johns Thermal Underwear

Amazon

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Uniqlo HEATTECH Pile Lined Sweatpants

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Eddie Bauer Men’s Faux Shearling-Lined Thermal Henley

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Eddie Bauer Women’s Thermal Tech Crew

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Uniqlo HEATTECH Knitted Tights

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Columbia Men’s Crystal Leaf™ Omni-Heat™ Helix Half Zip Pullover

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Doc Miller Open Toe Compression Socks, FitFlop Women’s Lulu Wedge Sandal, iHealth Neo Wireless Blood Pressure Monitor, and 7 For All Mankind Men’s Austyn Relaxed Fit Straight Leg Jeans on a blue background

Kate Spade Madison Lilly Pochette, Staci Medium Tote, Flora Flower Bouquet Crossbody and Gwen Espadrille Flat on a blue gradient background

People wearing Alo Airbrush High-Waist 7/8 Bootcut Legging in Espresso, Navy and Black on a concrete background