A convenient system for collecting urine has been granted a patent. The system includes an undergarment extending around the waist and down both thighs of the user. It also has a crotch area and lower edges. The undergarment does not include restricting elastic straps or bands for securing the urine collection leg bag around the circumference of a leg. A pouch formed of an additional piece of fabric is sewn to the inside of the undergarment for securing the urine collection leg bag. The inside pouch extends along the thigh of the user and is located wholly within the undergarment above the lower edges. The undergarment comprises a sewn structural seam is attached to the outer edge of the pouch to the undergarment. The sewn seam extends from an elastic waistband to a lower seam edge of the pant leg. The undergarment comprises a sewn structural seam attaching the inner edge of the pouch to the undergarment. The sewn seam extends from an elastic waistband to a crotch area and down the inner thigh seam of the leg to the leg hem. The undergarment comprises a sewn structural seam attaching the bottom edge of the inner pouch to the undergarment at the leg hem. The structural seams are not comprised of elastic straps or bands. A urine collection leg bag is supported in the pouch. The leg bag has an outlet release valve. The undergarment has a small opening at the bottom of the pouch to receive the outlet release valve. The pouch extends from the waist area down the thighs and the pouch further has an opening at the crotch area for receiving the urine collection leg bag. Urine collection arrangements are connected from the user’s crotch area to the urine collection leg bag.