2: Waist: 42 cm /17 in
4: Waist: 46 cm /18 in
6: Waist: 50 cm /20 in
8: Waist: 54 cm /21 in
Piece is handmade, so actual size may vary.
Honest disclaimer: I made the inside and outside in quality 100% cotton to improve breathing. If washed, some of the holographic rainbow effect will fade, but they will still look cool.