Amsterdam Panty SKU: U2920V. From the front, these are a basic if also quite pretty panty; the color and sheer fabric makes them special. But turn around, and it’s a party in the back! The rumba style of the ruffles makes these fun, flirty and super sexy. The stretch fabric ensures comfort, which will make you want to wear these as often as you can. Cotton gusset. Made of 70% nylon, 20% lycra and 10% cotton.