Jist Men's Tartan Drainpipe Jeans 98% Cotton/2% Elastane Zipper closure Mens Drainpipes Medium Rise Jeans. 98% Cotton, 2% Elastane (Lycra) Preshrunk. Machine Washable 100 Degrees Fahrenheit, Tumble dry Low. Made in the United Kingdom. Machine Washable 100F. High Quality, Durable and Hardwearing Material.