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Thermals

Buy Thermals Online

Keeping warm isn’t just about staying comfortable. It’ll also help you perform at your best at work.

Shop our range of thermals to make sure you can stay cosy all day long.

From socks to thermal vests and long johns, for both men and women, there’s something for everyone.

8 results found

Display items:

THERMAL UNDERGARMENT SHORT SLEEVED

£ 8.92

LADIES THERMAL SOCKS

£ 2.29

THERMAL UNDERGARMENT LONG SLEEVED

£ 8.19

WOMEN'S THERMAL TROUSERS - BLACK

£ 7.93

WOMEN'S THERMAL T-SHIRT LONG SLEEVE - BLACK

£ 8.86

THERMAL LONG JOHNS

£ 5.43

THERMAL SHORT SLEEVE VEST

£ 7.32

THERMAL LONG SLEEVE VEST

£ 6.11

FAQs

  • You can buy thermal clothes right here at SMI – from short-sleeve thermal vests to long-sleeve thermal undershirts, long johns, and even thermal socks.

    Plus, find all the gear and accessories you need to stay warm and comfortable from head to toe. 

    Our full workwear range includes:

    • T-shirts
    • Trousers
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    • Waterproofs
    • Fleeces and softshells
  • Thermal clothing is a base layer designed to be worn under other layers of clothing, such as fleeces and softshells, sweaters, and jackets.

    It works by creating a layer of insulation close to the skin. This traps body heat and wicks away moisture to help regulate your body temperature.

  • In winter, you’ll want to pick out workwear that prioritises warmth and functionality.

    Exactly what items you’ll need will vary depending on factors like what kind of job you do, whether you’re working indoors or outdoors, and any PPE requirements.

    Clothing to consider includes:

    • Waterproofs
    • Beanie hats
    • Thermal gloves
    • Workwear thermals
    • Fleeces and softshells
    • Waterproof safety boots
    • Sweatshirts and jumpers
    • Jackets and bodywarmers

    Layering your clothing is key during winter, so you can stay just the right temperature all day long.

  • HSE asks employers to take into account six key factors when assessing what makes a comfortable workplace temperature:

    1. Air temperature
    2. Radiant temperature
    3. Air movement and speed
    4. Humidity
    5. Clothing and PPE insulation
    6. Work rate and metabolic heat

    In particular, HSE states that employers should provide a minimum working temperature in workrooms – usually at least 16°C or 13°C for strenuous work.

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