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ThermoAscent Jersey - Navy


The ThermoAscent Jersey - Navy

For those who seek warmth while climbing high through deep winter. The ThermoAscent Jersey. A deep winter super warm long sleeve thermal jersey designed to insulate the body and keep you warm in temperatures down to 2c. (35F) 

Made with a brushed, fleece-lined Italian 'Stelvio' Fabric, the ThermoAscent Jersey offers excellent thermoregulation and moisture management capabilities.

A close-fitting but high stretch jersey, our high collar keeps cold air away from the neck and chest, whilst tight wrist cuffs keep the cold from your arms and wrists.

3 large rear pockets provide ample space for winter essentials, plus a 4th water repellent zipped pocket for valuables keeps things safe and dry. A large deep reflective strip on the rear pocket keeps you seen in the dark or low light, and the black pocket fabric prevents mud or road spray from spoiling the aesthetic of your new jersey.  


  • Close Fitting Long Sleeve Thermal Jersey
  • Premium Italian Fleeced Fabric
  • Stretchable to ensure a perfect fit
  • Large hidden zipped phone/valuables pocket
  • 3 large rear pockets
  • Large deep visibility reflective strip on rear pocket
  • Reflective tabs for added visibility
  • New 3D Silicon chest logo
  • New 3D Jersey detailing
  • Full length YKK cam-lock zipper
  • High collar and deep cuffs to add warmth where it matters
  • Silicone gripper at the hem
  • Material : 83% Polyester / 17% Spandex

Care Instructions

  • Wash at 30c with similar colours
  • Do not tumble dry
  • Do not Iron.
  • Do not bleach
  • Air dry
  • Do not dry clean


    Click here to view the Size Guide

    Studio model is 172cm, 67kg, and wears a size Small to give a close fit

    Customer Reviews

    Based on 64 reviews
    Adam Walsh
    ThermoAscent: Glacier colourway but tropically warm

    This is an excellent jersey which has met all my expectations. Its been worn on a 10deg morning with a singlet base layer down to 0 deg with a long-sleeved wool base layer & jacket. In both occasions I've been warm with the jersey providing excellent temperature regulation. The fit is to size and comfortable. This is my third Band of Climbers item having previously bought the LS pro season jersey (which is fantastic) and full length bib shorts. Will continue to recommend the brand

    Mark Briggs

    ThermoAscent Jersey - Navy

    for cold temp

    Quality garment. L size fits me well, 181cm, 68kg

    Lord Wex
    Touch of thermo

    Worn this a couple of times on early morning spins now when temp has been 7-8 degrees. Has worked well at that temperature with just a short sleeve base on underneath (and you even get a bit of a 'dab on' depending on the pace you're riding at). Can imagine this will be a decent autumn/winter piece of kit down to fairly low temperatures with the right layers on.

    Enrico Eberhart
    Winter Warmer

    A great bit of BoC kit. Fits great. Nice high collar and reflective patches where they need to be.
    I’m 173 cm, 67 kg with long arms and shorter torso. I bought a small and the fit is terrific .
    Jersey does it’s job of keeping you warm when it needs to .