Jacob Base Layer
£32.99
Size GuideFind in StoreStyle 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 (19)
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 |
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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!
Jordan Gilbert #24 Team HARIBO Starmix National Superstock 600