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The Calidum is a little different. Arc'teryx took the classic five-panel design, then made it with the same performance structured mesh they use in our Konseal climbing harness. The result's a durable, breathable cap that works anywhere – pushing it on the trail, hanging out at camp, and resupplying in town. The material's stretch forms to fit, and the back secures with a TPU strap and buckle.
