Skims vs Amazon this is such a great basic top! I have the amazon one in lots of colors and it is my favorite basic. Also comes in a short sleeve style. The fabric is exactly the same on both tops. 93% Nylon / 7% Elastane for the skims and 75% Polyamide, 25% Elastane. Polyamide is nylon. I am wearing a small in both long sleeve tops. LTKFindsUnder50 LTKSaleAlert LTKStyleTip