The purple one is Heattech. The light pink one is 100% cotton. Both were quickly outgrown. However, these are used items from a child. Please refrain from purchasing if you are concerned about minor details. Soft cotton long-sleeved undershirt set of 3, pink, comfortable to wear. - Color: Pink - Material: Cotton - Sleeve Length: Long Sleeve - Quantity: Set of 3 Thank you for viewing.