Impact Fitness - TrackStar Maternity Workout/Yoga Active Top Fabric: 88% Supplex / 12% Lycra Body Length: 28" Sizing: Small = Bust 32-34" / Aprox Size 2-4, M = Bust 34=36" / Aprox Size 6-8, L = Bust 36-38 / Aprox Size 10-12 Breathable, Stretch Fabrics for your Growing Belly Made in the USA