What Our Gearhead(R) Experts Are Saying:"I wore the Up Next Scoop Layer Long-Sleeve Top on a midday trail run and never overheated despite the sun being out the whole time. The UPF 40 protection meant I could skip sunscreen on my arms, and the fabric stayed light through every mile."A midday run means dealing with full sun for the whole route, and the Up Next Scoop Layer Long-Sleeve Top handles that without trapping heat against the skin. The ultra light, breathable fabric moves air through every mile, while UPF 40 protection covers the arms without needing a fresh layer of sunscreen halfway through. The scoop neckline keeps it from feeling closed off despite the long sleeves, and the regular fit leaves enough room to move freely through a full stride. It's a layer built for the miles when the sun isn't going anywhere.