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MicroWarmTech™ Thermal Tops: Warmth for Every Winter Layer

Cold-weather dressing is not the same for every woman or every day. A lightly cool office, a daily commute, and a long outdoor stay all call for different levels of warmth. OGL’s MicroWarmTech™ Thermal Tops are designed to make that choice easier, with three Eco-Mousse® fabric structures created for different temperatures and everyday activities.

What Is MicroWarmTech™?

MicroWarmTech™ is OGL Fabric Lab’s approach to adaptable thermal comfort. Bayer’s ultra-fine thermal fibers are blended into Eco-Mousse® fabrics, then developed into different textures to provide warmth across a range of temperatures.

The collection covers approximately 23–68°F, offering a cloud-soft feel while helping retain body heat. Depending on the style, these fabrics can work as a close-to-skin base layer or as part of a layered winter outfit.

Choose Your Warmth Level

LiteWarm: Lightweight Warmth for Mild Cold

LiteWarm styles are suitable for approximately 50–68°F. Their unbrushed construction feels smooth and lightweight against the skin, making them useful for transitional weather and indoor settings.

Choose LiteWarm when you want:

  • Light warmth without a heavy feel.

  • A smooth base beneath a blazer or cardigan.

  • Comfortable coverage for offices and heated interiors.

  • Easy layering during fall and spring transitions.

LiteWarm focuses on body heat retention while maintaining a light, flexible feel for everyday movement.

ProWarm: Balanced Warmth for Daily Wear

ProWarm styles are suitable for approximately 41–59°F. Their single-side brushed construction helps retain air for added warmth while keeping the garment comfortable for regular activity.

ProWarm is a practical choice for:

  • Daily commutes.

  • Cool mornings and mild winter afternoons.

  • Walking, errands, and everyday outdoor plans.

  • Layering beneath jackets, overshirts, or knitwear.

This middle warmth level works well for women who move between indoor and outdoor environments throughout the day.

MaxWarm: Extra Warmth for Colder Conditions

MaxWarm styles are suitable for approximately 23–54°F. Their thicker double-side brushed construction is designed to reduce heat loss and provide a warmer feel in colder conditions.

Choose MaxWarm when you need:

  • More dependable warmth for cold-weather outings.

  • A comfortable base layer beneath a winter coat.

  • Additional coverage during long periods outdoors.

  • Soft insulation without relying on several bulky layers.

MaxWarm is especially useful for women who expect to spend extended time outside or in colder, less active conditions.

How Eco-Mousse® Fabrics Create Different Warmth Levels

The three warmth levels use different surface structures to create different wearing experiences:

  • Unbrushed: Smooth, light, and easy to layer.

  • Single-side brushed: Adds a soft insulating surface while retaining flexibility.

  • Double-side brushed: Provides a thicker feel and greater warmth for colder weather.

Although all three belong to the Eco-Mousse® family, they are intended for different temperatures and activity levels. Checking the warmth rating can help you choose a thermal top that matches your actual routine.

Match Thermal Tops to Your Daily Routine

For Transitional Indoor Days

LiteWarm is a useful choice for mildly cool weather, air-conditioned offices, and days when you may add or remove a cardigan.

For Work Commutes

ProWarm offers a balanced option for women who travel between home, transportation, and the office. Wear it with tailored pants, a midi skirt, a blazer, or a lightweight jacket.

For Cold Outdoor Plans

MaxWarm can serve as a reliable first layer beneath a wool coat, puffer jacket, or other winter outerwear when temperatures are lower.

For Layered Winter Outfits

A thermal top creates a smooth foundation beneath shirts, sweaters, cardigans, and jackets. Choosing the right warmth level can help prevent an outfit from becoming unnecessarily thick or restrictive.

Why Thermal Tops Work as Base Layers

A well-designed thermal top should support the rest of an outfit rather than compete with it. Close-to-body silhouettes create a clean foundation, while stretch helps the garment move with you during commuting and daily activities.

Lightweight construction can also reduce layering bulk. Instead of depending on one very heavy garment, women can combine a suitable thermal top with a cardigan, blazer, coat, or jacket according to the weather.

How to Choose the Right MicroWarmTech™ Top

Use the temperature ranges as a practical starting point:

  • Choose LiteWarm for light coverage and easy indoor layering.

  • Choose ProWarm for balanced warmth during everyday activities.

  • Choose MaxWarm for colder temperatures and longer outdoor exposure.

  • Consider your activity level, outer layers, wind conditions, and personal comfort.

The listed temperature ranges are guidelines rather than guarantees. Individual warmth can vary depending on movement, weather, layering, and personal sensitivity to cold.

Explore MicroWarmTech™ Thermal Tops

MicroWarmTech™ Thermal Tops give women more than one way to dress for cold weather. LiteWarm, ProWarm, and MaxWarm offer different levels of warmth, from smooth transitional layers to deeper insulation for colder days.

Whether you are commuting to work, running errands, traveling, or spending time outdoors, choosing the right thermal structure can make winter dressing feel warmer, lighter, and easier to adapt.

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Frequently Asked Questions

Q Where can I find the product measurements for OGL tops?
A

You can find the product measurements on each product page. Click “Size Guide”, then select “Product Measurements” to view detailed measurements for that specific top.

Q What is the difference between OGL bra tops and regular tops?
A

Regular tops usually need a separate bra underneath, while OGL bra tops include built-in support. This makes bra tops easier to wear with open-back, low-back, fitted, or neckline-focused designs. They also help create a smoother outfit because there are fewer layers and fewer visible straps.

Q Do all OGL tops have Built-In Bras?
A

No. Not all OGL tops come with built-in bras, but over 60% of OGL tops are designed with built-in bra support. These styles are especially helpful for women who want fewer layers, less visible bra lines, and a smoother everyday outfit.

Q How can I tell which OGL tops have Built-In Bras?
A

You can check the product image. Tops with built-in bras usually have a “Built-In Bra” icon on the upper right corner of the main product image. In addition, the product name often includes “Bra Top” when the style comes with built-in bra support. If a product does not show this icon or mention bra support in the name, it usually means the top does not include a built-in bra.

Q Is it okay to wash built-in bra tops in the washer?
A

Yes, built-in bra tops can be machine washed. For best care, we recommend removing the pads before washing. Washing the pads separately helps maintain their shape and extends their lifespan.

Q Will the bra pads wrinkle? How can I fix it?
A

With proper care, pads maintain their shape without wrinkling. If washed while folded or compressed, wrinkles may occur. To fix, hold a steam iron a few inches away and gently steam, then let them rest to reshape.

Q How can I tell if my built-in bra top is 2.0 or 3.0?
A

Scroll below Design Features on the product page. If you see the “Built In. Step Out” image, it’s 3.0; if not, it’s 2.0. Not all styles have been upgraded yet.