With its many improvements from the original, the Rio II CPAP mask is simple to use, lightweight, comfortable, and very user friendly. It gives the user more freedom of movement with the unique rotating ball in socket swivel. The simplistic design creates a comfortable fit, allowing users to read or watch TV before bed. Available with 3 cushion sizes included, this mask is ideal if you are unsure which cushion size you may need or if your size varies. The Rio II weighs only 2.3 ounces, making this one of the lightest masks on the market.