A trousers has a left pocket bag and a right pocket bag, each formed from a first material and a second material, the first material having stretch and recovery properties in at least one direction thereof, and the second material having stretch properties in at least one direction thereof The first material comprises a first composite material including a fusible or interlining fused to a cotton or cotton blend base fabric. The left pocket bag comprises a left inner piece comprising the first material, and the right pocket bag comprises a right inner piece comprising the first material. The left and right pocket bags are attached to the trousers with the first base fabric of the left and right inner pieces facing toward a wearer of the trousers.