Mountain Khakis Women's Size Chart Surrounded by the Sawtooth Mountains, the town of Hailey, Idaho is an ideal locale. It's outdoorsy and downright adorable, and is the inspiration for Mountain Khakis' Hailey series. The Tank features a keyhole back and drapey silhouette. Made from 78% modal/22% poly with a specila 'sanded' finish in a Relaxed fit. Features: - Keyhole back - Drapey silhouette - 2.9oz 78% Modal, 22% Polyester Sanded Finish - Relaxed fit