What Our Gearhead® Experts Are Saying: “I love this long-sleeve for hot, exposed trail rides. The Blast fabric stays incredibly cool while still giving UPF 50+ coverage, and the articulated sleeves make it feel natural both in the saddle and when hiking the bike. The seamless design is a huge bonus—no rubbing when you’re sweaty, and it layers cleanly under a pack.” We reach for the Assos TACTICA Long-Sleeve T-Shirt T5 when the day ahead means grinding up dusty climbs, weaving down rough singletrack, and staying out long after the sun peaks. Built from Assos’ new Blast circular knit, this top keeps us cool with high-end breathability and moisture management while offering UPF 50+ protection that’s essential on wide-open gravel and exposed mountain trails. The permanent odor control helps keep things fresh, even after hours in the heat. Articulated sleeves move naturally as we shift, climb, and descend, giving us full mobility whether we’re pedaling hard or pushing through tight switchbacks. The seamless construction eliminates friction under packs and hydration vests while also reducing excess material during manufacturing. It’s a lightweight, dialed-in trail layer that feels fast, stays cool, and protects us when the sun is unrelenting.