You put the intense in high intensity interval training. This adidas tee with HEAT.RDY is designed to keep up. Engineered for optimal airflow, AIRCHILL keeps you cool and focused. during high intensity interval training. Lightweight, breathable fabric wicks sweat to ensure you can push past your limits without overheating. A snug, athletic cut gives this tee a performance fit, ready for your toughest training sessions.By choosing recycled, we are able to reuse materials that have already been created, which helps to reduce waste. Renewable materials choices will help us to remove our reliance on finite resources. Our products made with a blend of recycled and renewable materials feature at least 70% total of these materials.