Genuine leather casing protects USB. RoHS compliant. Compatible with Windows XP and higher and Mac OSX and above. Complies with Prop 65. 3.62" H x 0.62" W x 1" L. Imprint area is 0.30" H x 1.00" L on Flap Right - ClosedCentered on body on front. Please call for rush delivery availability or multi-colour/multi-location imprints.