Under Armour Charged Cotton Short Sleeve T-Shirt CHARGED COTTON - Lightweight, comfortable material that combines the comfort of a natural cotton with the lightweight functionality of a technical fabric. Loose Fit - Full, loose fit for enhanced range of motion and breathable comfort no matter where your workout takes you. Signature Moisture Transport System - Efficiently wicks sweat away from the body to keep the wearer cool, dry and focussed. Ribbed Collar - Strengthens the shirt around an area of potential vulnerability to maximise robustness and longevity. Flatlock Seams - Smooth seams minimise the risk of chafing and the irritation it can cause.