Columbia Women's Pink Whirlibird Interchange Jacket. featuring a waterproof-breathable shell. It utilizes Omni-Tech™ critically seam-sealed waterproof-breathable fabric to keep you dry and comfortable. The shell material is fabricated out of a few different materials and is made of 72% Nylon and 28% polyester. The shell is equipped with Columbia’s 3-layer Omni-Tech laminate for waterproofing and breathability. When it rains or you spill, you can watch the water droplets drip down without attaching to the jacket material. Thanks to the waterproofing Omni-Tech, stay dry inside and out all day long. Approximate Measurements Laying Flat: 20" Armpit to Armpit 26" Length (Shoulder to Hem) Note: This jacket is from the Columbia Women's Whirlibird Interchange Jacket line, but listing is for the outer shell only.