A measurement device for measuring the circumference of a human head. The measurement device includes a generally circumferential body that fits around a human head. The generally circumferential body has a receiver segment with an elongated geometry. The receiver segment includes an adjustment end receiver. The receiver segment is flexible. The generally circumferential body also has an adjustment segment with a measurement end. The adjustment segment measurement end has a diameter that is narrower than the receiver segment adjustment end receiver diameter. The adjustment segment has a measurement indicator that extends from the measurement end. The adjustment segment is flexible. The adjustment segment measurement end is adjustably inserted into the receiver segment sliding end receiver. The visual measurement indicator is operable with respect to the receiver segment adjustment end receiver.