Dr. Denim Echo Straight in Black. - size 24 (also in 25, 26, 27, 28, 29, 30, 32) Dr. Denim Echo Straight in Black. - size 24 (also in 25, 26, 27, 28, 29, 30, 32) 100% cotton. Made in Pakistan. Machine wash. Zip fly with button closure. 5-pocket styling. 16.5 at the knee and 18 at the leg opening. DRDR-WJ110. 2010108101. Keeping faith in the theory that every day is a denim day, Dr. Denim is a Gothenburg, Sweden-based fashion label that values the power of the perfect pair of jeans. By combining functionality, affordability and fashion, the brand's expansive collection includes not only high-quality denim garments, but comfortable, non-denim closet staples to flawlessly match. Shop the latest in fashion from Dr. Denim