This Sweat Activated Workout Shirt with an Invisible Message will let you know when your workout is finished. It is designed for you to reach the pinnacle of your workout until the message is revealed. This stretchable and Ultrasoft Tee will give you comfort and flexibility to have you performing at your peak.
Our Sweat Activated T-Shirts have a hidden message that only shows when you sweat.
Our unique formula and process guarantees that the design is 100% invisible when the T-Shirt is dry, and has high contrast when wet.