A garment has a pocket with an opening located at the waistband of the garment. A strap includes a stretchy membrane and at least one of the opposite ends of the strap extends into openings in the garment to form a horizontal pocket opening. The strap may be made of an elastic material. A fabric can conceal part of the strap and may surround or be attached to the strap. The pocket lining has front and rear walls attached together, with top horizontal portions of the front and rear wall attached behind an exposed portion of the strap. The walls of the pocket lining may be attached to two join seams of the garment. Stretching the strap outwards will open the pocket thus accessing belongings stored therein. When the pocket is closed, the elastic material of the strap provides stretch and recoil, securing any belongings safely inside the pocket.