What Our Gearhead(R) Experts Are Saying:"I wore this on a skin track that started cold and turned into a sweat fest by the second switchback. The half-zip let me vent immediately, and the merino wool never held onto odor even after a full weekend of wearing it back to back."A skin track rarely stays at one temperature for long, cold and still at the bottom, working hard by the second switchback, exposed to wind once the trees thin out near the top. The Oasis Half Zip Hoodie from Icebreaker moves through all of it, 100% merino wool that naturally regulates warmth, whether the effort is climbing hard or standing still at the summit. A half-zip design allows quick venting without stopping to strip a layer, while a gusset underneath adds mobility exactly where the body needs it most. Thumb slits keep sleeves in place through repeated arm movement, and flatlock seams paired with a dipped hem eliminate friction points that would otherwise wear thin over a full season of use.