Aero compression tights designed to reduce heat during running feature innovative 【HeiQ Smart Temp】 technology (evaporative cooling and cool-to-the-touch function) that keeps you cool when running heats up in response to rising body temperature. Cool/Coolness: Innovative HeiQ Smart Temp technology senses rising body temperature and increases sweat evaporation from the fabric, keeping you cool for optimal performance. (Evaporative cooling function) Storage: The mid-rise power mesh waistband for body sculpting provides a secure fit and side pockets, offering ample bounce-free and secure storage for phones, cards, and keys. Lightweight and Flexible Support: Powerful and lightweight PWX fabric and 360-degree stretch circular knit reduce muscle movement and damage while maintaining flexibility for ultimate sports performance. Compression Effect: Moderate graduated compression promotes blood flow to the muscles, improving performance, reducing the risk of injury, and speeding up recovery. Quick-drying: High-quality, durable yarns provide squat-proof coverage and keep your skin cool and dry. Reflective Trim: 2XU logo on the thigh, signature X logo on the calf. Fabric Composition: Front panel and back panel: 72% Nylon, 28% Lycra. Pocket: 68% Nylon, 32% Lycra Compression Rating: Moderate: 20-23 mmHg *