What Our Gearhead(R) Experts Are Saying:"This tank is ideal for warm-weather trail days. The quick-dry fabric wicks sweat efficiently, and the flatlock seams prevent chafing even with a backpack. The side vents add extra airflow, and the reflective details keep visibility high when running late into the evening."The Black Diamond Distance Tech Tank is designed for those who seek freedom and performance on the trail. Constructed from lightweight polyester jersey with quick-dry and anti-odor technology, this tank keeps up during high-output activities while ensuring all-day comfort. Backpack-compatible straps, flatlock seams, and side vents make it an essential layer for long trail adventures. The rainbow reflective logo enhances visibility for early starts or late finishes.