This is exactly what we were looking for. I don't know what the real name of the belt is, but it's soft and smooth, not the very uncomfortable thick belt of other tights. They are strong, soft and smooth.
C9 Champion Girls Supersoft Bright Girls' Clothing and Active
46 Review
Dancina Toddler Leotard Flutter Sleeve Girls' Clothing for Active
55 Review
Amazon Essentials Little Short Sleeve Leotard Girls' Clothing for Active
61 Review
Hollhoff Gymnastics Playgrounds Shorts - Breathable Clothing for Girls
48 Review