The Outdoor Research Vigor Grid Fleece Pullover Hoodie uses ActiveTemp™ technology to keep you cool and dry during high-output days, whether you're crushing trail miles or early morning boulder problems. Flat-seam construction and movement-mirroring stretch provide chafe-free mobility, while UPF 30 adds sun protection and multiple pockets stash essentials. The layer that adapts to your effort level instead of fighting it.