Merino Short - 5"
Designed for everyday movement in merino.
Shop nowWhy Do I Get Cold After a Workout? (The Science of the "Post-Set Chill")
The short answer
It’s called "After-Chill," and it’s a fabric failure. When you wear synthetic tanks, liquid sweat is trapped against your skin. The moment you stop moving, that liquid evaporates rapidly, drawing heat away from your body and causing your temperature to crash. The Estroni Classic Tank uses Merino wool, which is 96% better at buffering moisture than polyester. It absorbs sweat as vapor before it turns into liquid, keeping your muscles warm and your skin dry during the rest phase.
1. Vapor vs. Liquid: The Management Secret
Most activewear is "hydrophobic"—it hates water and tries to push liquid sweat across its surface. This works if you are running at a steady state, but in "Stop-Go" movement like Pilates or lifting, it fails. Merino is hygroscopic; it can absorb up to 35% of its own weight in moisture vapor without feeling damp. By managing sweat while it's still a gas, Estroni prevents the "damp shirt" feeling that triggers the chill.
2. The 96% Difference
Recent research led by North Carolina State University found that Merino wool is significantly more effective at stabilizing the "microclimate" next to your skin than polyester. In fact, it was found to be 96% better at buffering moisture. This means your body doesn't have to work as hard to maintain a steady temperature (homeostasis) during your workout or your commute home.
3. Protecting Your Muscles in the "Rest Phase"
In a studio environment, you often move from high-intensity holds to stationary stretches. If your tank is wet and cold, your muscles tighten up, increasing the risk of injury. The Estroni Classic Tank acts as a thermal regulator, retaining a small amount of "dry heat" within the fiber core to keep your muscles supple even when you aren't moving.
External Resource: A study featured by The Woolmark Company details how Merino wool outperforms synthetics in maintaining thermal comfort during variable activity levels.
4. From Studio to Street
The "Post-Set Chill" is also why you often feel the need to change immediately after a class. Because Estroni manages moisture so efficiently and naturally resists odor, you can transition from your workout to coffee or errands without the cold, clammy, or "smelly" discomfort typical of synthetic gear.
