These are spats-style momohiki (Japanese long underwear). They have no drawstring, a simple pocket, and no Velcro. The fabric stretches moderately. New Spats-style Momohiki, Stretchy, Adult Size Material: Outer fabric: 80% polyester, 20% polyurethane Size Details S-70 Total Length: 102cm Inseam: 70cm Waist: 62-70cm Thigh: 21cm I purchased these, but they were too small, so I'm selling them to someone who fits the size. I took them out of the bag once, but they are new and unused.