Top-of-the-range, ultralight microfibre running shirt for maximum ventilation during high-intensity efforts in hot conditions.
At Compressport, we make no compromises. Our top-of-the-range Racing SS Tshirt is one of the lightest, most ventilated shirts on the market today. Lighter than the the Training and Performance shirts, the seamless 60-gram Racing model debuted at the 2018 Paris marathon and has been flying ever since thanks to its full-body ventilation concept. Fine-woven aeration panels across the back and ribcage are completed by wider vents between the shoulderblades and down the sternum. Mesh under the armpits and around the neckline flows into our signature striped weave on the sleeves for extreme breathability and sweat evacuation. The adjusted fit is streamlined without being compressive, the fabric is ultra-soft and comfortable, with microfibre composition ensuring that chafing and irritation in all sensitive areas is eliminated, while all fibres are dyed for improved durability. The round neckline sits flat against your skin while the brand new sleeve design frees up the shoulder area for improved range of motion. This 100% performance approach is completed by a racy, dotted pattern on the sleeve and hips : you shouldn't even need to check the clock to know you're running like the wind.
![Williamson Koika 150 Jig - 4.5" - 5oz - Aji [KKJ150AJI]](https://www.softspring.shop/image/williamson-koika-150-jig-45quot-5oz-aji-kkj150aji_OQ1iFx_300x.webp "Williamson Koika 150 Jig - 4.5\" - 5oz - Aji [KKJ150AJI]")
