climacool® provides heat and moisture management through ventilation. adizero: Functional lightweight fabric. Seam pockets without zip. Mesh inserts for additional air circulation. 100% Polyester. Fit: RegularPlease note adidas garments come in a variety of fits ranging from slim through to relaxed. Please consider the fit of each garment when you come to making a decision on which size you require aswe are unable to accept any personalised garments for return.