The On Men's Trail Long-T Solar is designed for long-distance trail running, combining lightweight breathability with UPF 40+ sun protection. Featuring On DryTec™ technology for quick-drying, moisture-wicking performance, it helps keep you cool and comfortable on warm days. Forwarded side seams and gusseted underarms allow for natural movement and chafe-free comfort, while the streamlined fit and reflective logo complete this performance-focused trail essential.