Mountain Warehouse Keep The Heat IsoTherm Top - Blue - 22

The Keep the Heat IsoTherm Top provides essential comfort and warmth during colder months. Designe...

Best current price£14.99from Mountain Warehouse

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4 offers from £14.99 - £29.99

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Mountain WarehouseKeep The Heat Womens Base Layer Top - Navy
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£14.99
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Mountain Warehouse USAKeep The Heat Womens Base Layer Top - Navy
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WallisMountain Warehouse Women's 'Keep The Heat' Quick Wicking Round Neck Winter IsoTherm Top in Navy | Size: 22
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Oasis UK & IEMountain Warehouse Women's Navy 'Keep The Heat' Quick Wicking Round Neck Winter Isotherm Top In | Size: 22
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£29.99
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Product Information

Full details

The Mountain Warehouse Keep The Heat IsoTherm Top is a versatile thermal base layer designed for active women seeking warmth without the weight during cold-weather outings. By utilizing advanced IsoTherm technology, it provides efficient heat retention while actively pulling moisture away from the skin, making it an excellent choice for winter hiking, travel, or everyday layering. While it offers superior comfort and a lightweight profile, users should note that as a technical thermal garment, it performs best when worn close to the skin as part of a layering system.

All features

Age Groupadult
ColourBlue
GenderFemale
Dress Size UK22
Model Part Number5057634612814
BrandMountain Warehouse

Extended Product Information

FAQs

Can I wear this top as an outer layer?

While you can wear it as an outer layer in mild, dry conditions, it is specifically designed as a thermal base layer for maximum heat retention under other garments.

Does this top contain wool?

No, the Keep The Heat IsoTherm Top is typically made from synthetic polyester fibers designed for durability and rapid drying.

How do I ensure I get the right size?

Refer to the specific sizing guide for the brand, focusing on your UK dress size for the most accurate fit.

Is the fabric itchy?

The fabric is designed to be smooth and comfortable against the skin, specifically to avoid the irritation often associated with traditional thermal wools.

What is the warranty period?

This product is backed by a 2-year warranty to ensure lasting quality and customer satisfaction.

Troubleshooting

Garment feels damp after high-intensity activity

Ensure you are not wearing non-breathable layers over the top, which can trap moisture inside.

Fabric piling after heavy use

Wash the garment inside out in a mesh laundry bag to reduce friction against other items.

Pros and Cons

Pros

  • Retains body heat effectively without added weight
  • Excellent moisture-wicking capabilities for dry comfort
  • Highly packable for travel and outdoor trips
  • Dries quickly after washing
  • Backed by a 2-year warranty

Cons

  • Synthetic material may not feel like natural fibers to all users
  • Best performance requires proper layering with other technical gear
  • Designed primarily for base-layer use rather than as a standalone outer garment

Setup, Compatibility & Care

To maximize the performance of your IsoTherm Top, it should be worn directly against the skin. This allows the moisture-wicking technology to work as intended. When layering, pair this top with a mid-layer, such as a fleece or wool sweater, followed by a waterproof outer shell if weather conditions are harsh.

For care, it is recommended to wash the garment in cold water and avoid heavy-duty detergents that may break down the wicking treatment. To extend the life of the fibers, air-dry whenever possible, although the material is designed to be low-maintenance and resistant to damage. Always check the internal garment tag for specific temperature settings if using a machine wash.

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