Tracksmith Women's Harrier Long Sleeve Meta-filter-filter by brand- Ciele Training isn’t rocket science –

Training isn’t rocket science – get the basics right and you’re most of the way there

breathable fabrics and lightweight adjustments

max cushioning is here to stay

midweight InfinaLock fabric feels compressive and supportive

Tracksmith Women's Harrier Long Sleeve Meta-filter-filter by brand- Ciele Training isn’t rocket science –A performance top for cooler conditions, reimagined in a heavier Merino knit with 37. 5 Technology to optimize temperature regulation. For more than a decade weve pioneered the use of Merino wool in high performance running apparel, leveraging its natural ability to regulate temperature and resist odor for countless miles. Its a key component in our longstanding Harrier Long Sleeve, an enduring element even as weve refined the style over the years.