Wear this stunner over any tank you want to enhance or under any vest you want to add glamour to. We have two colors. Size small-3x. Suggested is to size up. The customers who have purchased in store wore a tighter fit than on the model in the photos. I would think the model is wearing a medium or large for a fit shown. A small would be a tighter fit for model. 100% polyester. Spot clean only.