Material: 95% Polyester, 5% Spandex. Coral, denim blue and black is a slightly softer material.
Fit: True to size with a flowy fit in the belly area. If in between sizes, you can size down in the denim blue, coral or black. The charcoal is a slightly different material so if between sizes, size up for more room in the chest/under arm area.
Models in coral and denim blue are a true small, wearing a small. Model in charcoal is a small/medium, wearing a medium for more room in the chest. Last model is a true 1X, wearing an x-large in black and it fit perfectly!