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Description
Heat Holders thermal construction holds more warm air close to the skin, keeping you warmer for longer. Heat Holders thermal underwear is the perfect underwear set for layering, as of its easy fitting design for under your clothes. This helps make a smooth slim-fitting thermal base layer for the colder days; where one layer isn't enough! This thermal underwear set has a TOG rating of 0.45, adding that crucial extra layer of warmth. The higher the TOG, the better the garment will keep you warm.
The ribbed construction of this thermal underwear has been designed so that it effortlessly shapes to the bodies natural contours - helping to provide the best fit possible. This makes it hardly noticeable under your clothing. The base layer is made of a cotton-rich blend, which gives you natural softness, and warmth, for all-day wear. This shirt has a longer length body so that the vest is able to be tucked in to stop cold drafts. It also has a seamless body, which reduces the risk of irritation for all-day comfort.
The thermal underwear set comes in 2 colours (Grey and White), and there are matching long johns also available in separate listings, or a long sleeve version of this shirt. We also offer women's sizes/colours.
Extra Product Details
- Thermal Sleeveless Shirt
- 4 Sizes
- 2 Colours
- 0.45 TOG
- Super soft & comfortable
- Ribbed construction
- Cotton Rich
- Seamless body
- Longer length body
- Long johns also available
Shipping & Delivery
Shipping & Delivery
Delivery is free on all UK orders over £50.
For UK orders under £50, and for international destinations, delivery costs are calculated at checkout before payment.
Standard tracked shipping usually takes 7–12 days unless a product page or checkout shows a different estimate.
You will receive tracking details by email as soon as your order has been dispatched.
Returns & Exchanges
We want you to be fully satisfied with your B&G purchase. If something doesn't feel right, you can request a return.
Return period
You can request a return within 30 days from the date you receive your order, as long as the items are unused, unwashed and with all original tags attached.
How to request a return
Send us an email at support@blegant.com with your order number and the items you wish to return. We'll reply with further instructions and the return address.
Conditions
- Items must be in original condition: unworn, unwashed and free of stains, odours or damage.
- For hygiene reasons, underwear and socks cannot be returned unless faulty.
Refunds
Once your return is received and inspected, we'll process your refund to the original payment method. Depending on your bank or payment provider, it may take a few working days for the refund to appear in your account.
Size guide

Find your best fit with the B&G size guide. Measurements can vary slightly by brand, so always check the size selector on each product page before ordering.
Women's clothing: UK 6 = XS, UK 8 = S, UK 10 = S/M, UK 12 = M, UK 14 = L, UK 16 = XL, UK 18 = XXL.
Men's clothing: S = 36-38 in chest, M = 38-40 in, L = 40-42 in, XL = 42-44 in, XXL = 44-46 in.
Footwear: use your usual UK size. If you are between sizes, check the product notes and choose the larger size for boots or trainers.
Fit tips: for fitted styles, choose your usual size. For a relaxed everyday look, size up. If you need help before ordering, email support@blegant.com and we'll be happy to help.