Gilbert Xact Scrum Cap in White. * 3 Dimensional Fit with a fully flexible design for superior fit. * Strategic air vent sections improve airflow to prevent overheating. Cut out ear sections for improved on field communication. * More features include the cross lace system, Xact padding configuration and an improved adjustable chin strap. * Dimensions for Scurm Caps are in centimeters: S = 55cm, M = 57cm, L = 58.5cm and XL = 60cm.