ACU M-65 Field Jacket with LinerUnited States Army ACU M 65 Field Jacket with Liner The U. S. Army ACU M 65 Field Jacket with Liner is made with 55% Cotton and 45% Polyester fabric. Purchase of a Field Jacket Liner with this product is not necessary, as it comes with the removable liner already buttoned in. Note: Long sizes are on phaseout and will not be restocked once sold out. Specifications: Durable water repellent finish Concealed hood and pocketing Hook and loop placement