The Sport's detachable headband offers more adjustability for a customized fit. The Luxe's fixed headband creates a snug fit, that some describe as "a hug for your head."
Sport features a detachable retention band with attachment points located at the temples. Adjusting the band can add an inch (2.54 cm) in addition to its stretch. The smooth and seamless headband, with no buckles, overlapping segments, or pressure points that disrupt sleep, lays flat against the head no matter one’s sleeping position (front, back or side).
Luxe has an attached headband. It’s slightly thicker and more stretchy than the Sport, and is covered in a soft, ruched fabric.
Your choice between Sport or Luxe depends primarily on your preference for band style and adjustability.