From Chalk & Notch:
The Mini Pony Tank is a swing shaped knit tank top or dress with a curved hem. There are two views: a tank top and a tank dress.
Suggested fabrics: Rayon jersey, bamboo jersey, modal jersey, cotton spandex, rib knit. This style is designed for a light weight to medium weight 75% – 100% stretch knit fabric with nice drape and good recovery. If your fabric has less than 75% stretch or less than 90% recovery, it’s recommended to use rib fabric for the bands.
Size Range: 12 months – 12 years