The Calcite Jacket lands squarely in the middle: at 13.1 ounces and featuring a 2.5-layer Gore-Tex Paclite Plus construction, it’s an impressively capable barrier against the elements. We brought the Calcite to the bottom of the Grand Canyon and on ski adventures in Colorado, where it faced conditions ranging from heavy rain to soft spring corn, and it proved to be a solid all-around shell.