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Carnac Short Sleeve Base Layer




Size guide

Helmet Sizing

Measure around your head at the widest point to determine the size you need.

Size guidance: To help choose the correct size helmet for your head measure around the widest part of your head, about an inch above your ears, with a soft tape measure, or piece of string. If you are on the cusp between sizes we advise that you size up.

The long sleeved version of our award winning short sleeve compression layer is simply packed with technical features and design touches that make it stand out against the crowd. Don't let its price tag fool you and don't pay over £80 for the same top from other brands.

  • Ergofit: Seamless tubular knit with 3 way stretch
  • Siltex prolen: antibacterial protection against funghi and bad smells
  • Made in Europe using 100% Bluesign approved fabric
  • UV-X protect: prolen sunprotect, Protects from UV radiation
  • Prolen Dryfast: Higher drying speed, more effective moisture transportation


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Carnac's commitment to providing quality products.


Next day delivery is available on all Carnac products.


Risk Free purchases with our simple returns policy.

Like all of our Pro 365X range of high performance, professional clothing, this long sleeve base layer brings you the highest quality and attention to detail through vigorous testing and professional design.

This is a year round, performance layer with extra focus on comfort cool zones. Constructed to increase breathability and comfort, with its seamless tubular knit, antibacterial and UV protection. The Pro 365X Long Sleeve makes the ideal base layer for both cool and summer conditions.


  • Use in cool and warm conditions
  •  Seamless construction minimises chafing



  • Keep cool in the summer
  • Keep warm in the winter
  • Keep dry at all times


Why use a base layer or seamless under garment?

We highly recommend that riders of all levels wear a base layer in all conditions. Our vast range of base layers are specifically designed and professionally tested to fulfill bodily comfort and performance needs at all times.

Base layers in summer?

Yes! A base layer is also necessary in the summer heat!

Our highly technical, seamless base layers are not just to keep you warm in the cold winter months. Even in the hottest of conditions, a base layer plays a very important role in comfort and performance.

Our seamless layers have a strong wicking capacity, drawing moisture away from your body, preventing sweat from building up on your skin.