Equip your young athlete for peak performance in cold conditions with this dark gray SuperThermal compression shirt, specifically engineered for boys aged 8 to 10 years (Size M). The specialized fabric features a soft brushed interior that traps heat directly against the skin, keeping muscles warm and active to prevent injury during intense training or team games. Built with four-way stretch technology, this base layer fits like a second skin to ensure an unrestricted range of motion, while integrated AirMesh 3D ventilation panels are strategically placed to prevent overheating during high-energy activities. Moisture management is handled by advanced TCA DRY technology, which pulls sweat away from the body to the fabric surface for rapid evaporation, keeping your child dry and lightweight throughout their workout. This versatile long-sleeve top functions perfectly as a standalone piece or as a thermal base layer under jerseys and jackets. The compression fit supports muscle recovery and provides a streamlined silhouette that stays in place. For the best fit, follow the true-to-size guide or select one size larger if your child is between sizes to ensure long-lasting comfort and durability in all weather conditions.