SO-ME
    WomenMenBrandsEdits
    Clothing
    • Activewear
    • Dresses
    • Nightwear & Loungewear
    • One-Pieces
    • Outerwear
    • Outfit Sets
    • Shirts & Tops
    • Shorts
    • Skirts
    • Suits
    • Swimwear
    • Trousers & Jeans
    • Underwear & Socks
    Accessories
    • Belts
    • Gloves & Mittens
    • Hair Accessories
    • Hats
    • Scarves & Snoods
    • Sunglasses
    • Ties
    Bags
    • Handbags
    • Wallets & Money Clips
    Jewellery
    • Anklets
    • Bracelets
    • Earrings
    • Necklaces
    • Rings
    • Watches
    Shoes→
    Clothing
    • Activewear
    • Dresses
    • Nightwear & Loungewear
    • Outerwear
    • Outfit Sets
    • Shirts & Tops
    • Shorts
    • Suits
    • Swimwear
    • Trousers & Jeans
    • Underwear & Socks
    Accessories
    • Belts
    • Gloves & Mittens
    • Hats
    • Scarves & Snoods
    • Sunglasses
    • Ties
    Bags
    • Handbags
    • Wallets & Money Clips
    Jewellery
    • Bracelets
    • Earrings
    • Necklaces
    • Rings
    • Watches
    Shoes→
    SO-ME
    Women
    ClothingActivewearDressesNightwear & LoungewearOne-PiecesOuterwearOutfit SetsShirts & TopsShortsSkirtsSuitsSwimwearTrousers & JeansUnderwear & Socks
    AccessoriesBeltsGloves & MittensHair AccessoriesHatsScarves & SnoodsSunglassesTies
    BagsHandbagsWallets & Money Clips
    JewelleryAnkletsBraceletsEarringsNecklacesRingsWatches
    Shoes
    Men
    ClothingActivewearDressesNightwear & LoungewearOuterwearOutfit SetsShirts & TopsShortsSuitsSwimwearTrousers & JeansUnderwear & Socks
    AccessoriesBeltsGloves & MittensHatsScarves & SnoodsSunglassesTies
    BagsHandbagsWallets & Money Clips
    JewelleryBraceletsEarringsNecklacesRingsWatches
    Shoes
    HomeFavoritesChatProfile

    Help

    • Help Centre
    • Shipping policy
    • Returns policy
    • Refund policy
    • Payments
    • Contact

    About

    • Our Story
    • How ranking works
    • Edits
    • Become a partner
    • Careers

    Shop

    • Women
    • Men
    • All Genders
    • Brands

    Stay Connected

    Get the latest on sustainable fashion, new arrivals, and exclusive offers.

    View our Privacy Policy

    Follow Us

    SO-MESO-ME

    © 2026 SO-ME. All rights reserved.

    SO-ME is a trading name of SO-ME App Ltd. Registered in England and Wales. Toward Studio, Cambrian Buildings, Cardiff CF10 5FL. SO-ME earns commission from qualifying purchases. This does not affect pricing.

    • Terms of Use|
    • Privacy Policy|
    • Cookies Policy|
    • Intellectual Property|
    • Affiliate Disclosure|

    M&S Heatgen Black Thermal Long Sleeve Top

    Marks & Spencer M&S Heatgen™ Medium Thermal Long Sleeve Tops Black - 1
    Marks & Spencer M&S Heatgen™ Medium Thermal Long Sleeve Tops Black - 1
    Marks & Spencer M&S Heatgen™ Medium Thermal Long Sleeve Tops Black - 2
    Marks & Spencer M&S Heatgen™ Medium Thermal Long Sleeve Tops Black - 3
    Marks & Spencer M&S Heatgen™ Medium Thermal Long Sleeve Tops Black - 4
    Men/Clothing/Shirts & Tops
    Marks & Spencer

    M&S Heatgen Black Thermal Long Sleeve Top

    £20.00
    WorkBusinessCasual

    Perfect For

    WorkBusinessCasual

    Colour

    black
    burgundywhiteblackgrey

    Sizes: 2xl / l / m / s / xl / xs

    Prices and availability shown may vary from the retailer's website. Please check the retailer for current pricing and stock.

    Chat to our stylist· AI

    Or about anything

    Product Description

    Black Thermal Long Sleeve Top - the essential for colder days. Designed with black, long sleeve, crew neckline, regular fit, Heatgen technology. Features medium-warmth comfort, stretchy ribbed neck, and supersoft seams for a cozy fit.

    Delivery & Returns

    Marks & Spencer — £3.99 standard delivery, free over £60.00 via Standard, typically 2-4 working days.

    Marks & Spencer offers free returns within 28 days. Post back via the retailer's chosen courier (free), or in-store where available.

    View Marks & Spencer's returns policy
    Key Features
    • •Brand: M&S
    • •Crew neckline detailing
    • •Long sleeve with ribbed cuffs
    • •Regular fit silhouette
    • •Materials: Heatgen technology
    • •Button closure
    • •Perfect for: work, business, casual
    Product Description

    Black Thermal Long Sleeve Top - the essential for colder days. Designed with black, long sleeve, crew neckline, regular fit, Heatgen technology. Features medium-warmth comfort, stretchy ribbed neck, and supersoft seams for a cozy fit.

    Delivery & Returns

    Marks & Spencer — £3.99 standard delivery, free over £60.00 via Standard, typically 2-4 working days.

    Marks & Spencer offers free returns within 28 days. Post back via the retailer's chosen courier (free), or in-store where available.

    View Marks & Spencer's returns policy

    Looking for similar styles? Browse more shirts & tops from Marks & Spencer, work shirts & tops, all shirts & tops, or everything from Marks & Spencer.

    Reviews

    Write a review

    0 / 2000

    Frequently asked questions

    What occasions is the M&S Heatgen Black Thermal Long Sleeve Top suitable for?

    The M&S Heatgen Black Thermal Long Sleeve Top is ideal for work, business, casual.

    How do I style the M&S Heatgen Black Thermal Long Sleeve Top?

    Layer under a jacket for added warmth on chilly days.

    What sizes does the M&S Heatgen Black Thermal Long Sleeve Top come in?

    The M&S Heatgen Black Thermal Long Sleeve Top is available in sizes 2xl, l, m, s, xl, xs.

    Key Features & Material
    • •Brand: M&S
    • •Crew neckline detailing
    • •Long sleeve with ribbed cuffs
    • •Regular fit silhouette
    • •Materials: Heatgen technology
    • •Button closure
    • •Perfect for: work, business, casual
    Conscious Choice

    Pre-loved Alternatives

    View All

    Second-hand alternatives to the M&S Heatgen Black Thermal Long Sleeve Top on Vinted, Depop and other UK resellers.

    Autograph M&S Autograph Supima Cotton T-Shirt Brand New With Tags
    Pre-loved
    Autograph

    M&S Autograph Grey Supima Cotton T-Shirt

    £10.00
    Hugo Boss Hugo Boss Fine Knit Jumper Mens Size EU 52 Large Black Crew Neck Cotton Soft
    Pre-loved
    Hugo Boss

    Hugo Boss Black Cotton Fine Knit Jumper

    £18.00
    Kendal Thermal long johns 2 pk size xlarge
    Pre-loved
    Kendal

    Kendal Black Thermal Long Johns 2 Pk Size Xl

    £12.99
    Next NEXT Black Moleskin Jacket – Size M
    Pre-loved
    Next

    NEXT Black Moleskin Jacket

    £17.50
    Hugo Boss Hugo Boss Knitted Jumper - Black - S
    Pre-loved
    Hugo Boss

    Hugo Boss Black Knitted Jumper - Men's Size Small

    £19.99
    Marks & Spencer Marks & Spencer Black Genuine Leather Belt For Men 40’’length
    Pre-loved
    Marks & Spencer

    Marks & Spencer Black Genuine Leather Belt For Men 40'' Length

    £12.00
    ASOS Navy White Jumper M Asos
    Pre-loved
    ASOS

    ASOS Navy White Crew Neck Jumper

    £15.99
    ASOS Asos Mens smart trousers
    Pre-loved
    ASOS

    ASOS Navy Smart Men's Trousers

    £5.00

    Similar Items

    View All

    More long sleeve tops for work and business wear from across SO-ME.

    Marks & Spencer M&S Heatgen™ Maximum Thermal Long Sleeve Top Grey Marl
    Marks & Spencer

    M&S Grey Marl Thermal Long Sleeve Top

    £28.00
    Marks & Spencer M&S 2 Pack Heatgen™ Light Thermal Long Sleeve Tops Cedar
    Marks & Spencer

    M&S Thermal Long Sleeve Tops Cedar in Cedar

    £28.00
    Marks & Spencer M&S 2 Pack Heatgen™ Light Thermal Long Sleeve Tops Denim
    Marks & Spencer

    M&S Thermal Long Sleeve Tops in Denim

    £28.00
    Marks & Spencer M&S 2 Pack Heatgen™ Light Thermal Short Sleeve Tops Cedar
    Marks & Spencer

    M&S Thermal Short Sleeve Tops Cedar Pack

    £25.00
    Marks & Spencer M&S Ultimate Cotton Blend Long Sleeve T-Shirt White
    Marks & Spencer

    M&S Comfortable Long Sleeve T-Shirt in White

    £25.00
    Marks & Spencer M&S 2 Pack Heatgen™ Light Thermal Short Sleeve Tops Black
    Marks & Spencer

    M&S Thermal Short Sleeve Tops in Black

    £25.00
    Marks & Spencer M&S 2 Pack Heatgen™ Light Thermal Long Sleeve Tops Ivory
    Marks & Spencer

    M&S Thermal Long Sleeve Tops in Ivory

    £28.00
    Warrior Warrior Men's Long-Sleeved Thermal Top in Black
    Warrior

    Warrior Men's Black Thermal Long-Sleeved Top

    £18.00
    Load More
    Load More