Jacob Base Layer
Jacob Base Layer
Jacob Base Layer
Jacob Base Layer
Jacob Base Layer
Jacob Base Layer
Jacob Base Layer
Jacob Base Layer
Jacob Base Layer
Jacob Base Layer
Jacob Base Layer
Out of stock
4.94 out of 5 based on 18 customer ratings
18 reviews

Jacob Base Layer

£54.99

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Style Notes

Style Notes

The Jacob is part of the ALL SEASON collection and is carefully made in the Knox UK Factory in the Lake District.
Made from MerinoPerform™ Advantage and woven in Australia from luxuriously fine Merino wool, it is combined with cooling and fast-drying synthetic fibres in the fabric structure. The mix of synthetic and Merino means that both vapour and sweat are managed away from the body keeping the wearer cool on hot spring/summer days and warm through the chill of autumn/winter. Merino is some of the finest and softest wool of any sheep and has a silky outer layer, so it is comfortable to wear without itchiness and it has a natural resistance to the bacteria that causes odour.
The fabric’s natural properties and elasticity mean that the garments keep their shape and drape naturally, making them non cling, cool and comfortable. The collection is ideal for motorcyclists as it has a high tensile strength as well as being highly breathable, fast wicking and drying

The Jacob has the richness of a grey marl body contrasting with light grey collar and cuffs on this long sleeve style.
Designed to be a comfortable non-cling fit, yet fine enough not to bunch up under outer clothing. Offering a fashionable sports look with subtle branding on the neck and hem to make it perfect for wearing on and casually off the bike.

Details & Fit

Details & Fit

  • Fast “one way” wicking and drying
  • Non-cling, fine fabric
  • Super soft seam construction
  • Efficient Temperature regulation
  • Breathable
  • Naturally Odour resistant
  • High tensile strength
  • Natural elasticity keeps garments in good shape
  • Easy care and washing with stain resistance
  • High UV resistance providing protection from the sun
  • Reassuringly safe, flame retardant
  • Natural and renewable fabric
  • Machine Washable and dries quickly
  • Sizes S- 3XL See size chart for details

Reviews (18)

    Peter J.
    Perfect for summer riding.
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    Andrew O.
    Used the base layers for the first time yesterday - great product. Comfortable and warm, looks good too. Thanks Knox!
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    William C.
    Great product. Quick delivery
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    PHIL M.
    Great top, really comfortable to wear both summer and winter.
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    1 0
    Scott E.
    Fits perfect. Super warm
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    Paul J.
    Great quality feel and fit
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    Alex B.
    The product is really quality and during use keeps the body dry ! I have always used within the Racing and I'm really happy because it is also very co...More
    The product is really quality and during use keeps the body dry ! I have always used within the Racing and I'm really happy because it is also very comfortable!
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    David M.
    I am very pleased with the fit, fill, and comfort of these base layers. I also enjoy the fact that they can keep you warm and prolong your riding duri...More
    I am very pleased with the fit, fill, and comfort of these base layers. I also enjoy the fact that they can keep you warm and prolong your riding during cold weather.
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    Philip M.
    Good service and prompt response
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    ROBERT S.
    I have found Knox by browsing internet about base layer products for motorcyclists. I used to have different brand of dry inside products used as a ba...More
    I have found Knox by browsing internet about base layer products for motorcyclists. I used to have different brand of dry inside products used as a base layer. Because they did not work for me as I thought I was skeptical about Knox brand and I have ordered this T shirt for test and... big surprise!

    It worked perfectly! Once on my back I could feel warmth. Wearing it during ride I still felt warmth and my back stayed dry. The size I ordered was right in chest measurement but a little bit too long. For me Knox has proved that their products are really fit for purpose. Do not waste money for other, maybe cheaper stuff - buy Knox. It's worth its money!
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    jordan Gilbert
    These baser layers are really comfortable, made from a really nice material. I don't get hot in them in the summer and now going into the colder races...More
    These baser layers are really comfortable, made from a really nice material. I don't get hot in them in the summer and now going into the colder races i will stay warm. Works really well, another great product by KNOX.



    Jordan Gilbert #24 Team HARIBO Starmix National Superstock 600
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    Johnny Blackshaw
    Makes racing my motorbike comfortable. This baselayer is great! When testing for a full day in the middle of summer I never once was un comfortable in...More
    Makes racing my motorbike comfortable. This baselayer is great! When testing for a full day in the middle of summer I never once was un comfortable in my leathers. Even now, riding in the beginning of the cold season the base layer keeps me warm and comfortable whilst racing my motorbike!
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    Freddy Pett
    Comfortable and effective. a great base layer to wear under my leathers. helps keep me cool and warm at the same time. They also make great lounge wea...More
    Comfortable and effective. a great base layer to wear under my leathers. helps keep me cool and warm at the same time. They also make great lounge wear.
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    Chris T.
    I have been wearing the Knox "Jacob" baselayers for the 2015 racing season, and they are always the first item to be packed into my kit bag when I lea...More
    I have been wearing the Knox "Jacob" baselayers for the 2015 racing season, and they are always the first item to be packed into my kit bag when I leave for a race weekend. They really do keep you at the perfect temperature, even in the height of summer racing around the track I have never felt too hot. They are also not too tight, so they do not restrict your movements on the bike at all.
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    1 0
    Luke Shelley
    Im currently racing in British Supersport alongside the British Superbike Championships and im currently using the Jacob long sleeve base layer! Its s...More
    Im currently racing in British Supersport alongside the British Superbike Championships and im currently using the Jacob long sleeve base layer! Its soft fabric makes a much nicer feel than the skin tight type base layers. Its so comfy i woudlnt race without them. Easy 5 stars!
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    Duncan H.
    Great product and excellent delivery
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    Brian M.
    Good quality nice looking could just ware as a normal T-shirt and fast delivery
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    Rosie Smith, Womens DH Champ
    These are an essential part of my race kit and every day riding gear now and I do not go anywhere without them. They keep you dry and warm and don’t...More
    These are an essential part of my race kit and every day riding gear now and I do not go anywhere without them. They keep you dry and warm and don’t look like base layers unlike many other brands, I would recommend them to everyone. They don’t shrink in the wash, and stay looking fresh and new all year
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    0 0
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Size Guide

Need help? Use Live chat or email us at: sales@planet-knox.com

Chest: Measure around the fullest part of your chest and your shoulder blades.

Waist: To work out your size, measure your waist in the position your trousers usually sit. As a guide this is roughly 5-6cm below your belly button.

Please note: The measurements given are body measures and we recommend you do not measure over clothing.

Men's UK Size Chest (Inches) Chest (cm) Waist (inches) Waist (cm)
S 35-37 90-96 30 76
M 38-40 98-103 32 81
L 41-43 104-109 34 87
XL 44-46 110-115 36 92
2XL 46-48 116-121 38 97
3XL 48-50 122-127 40 102
4XL 50-52 128-134 42 107
5XL 52-54 135-141 44 112