Soccer referee cards: referee card set includes red and yellow cards, pencil, pocket book with game score plan cards inside and a metal coach whistle with a lanyardSize: red and yellow card size are 11 x 7 cm/ 4.3 x 2.75 inch; The metal referee whistle size is 4 x 1.5 cm/ 1.57 x 0.6 inch; The referee card wallet folded size is 8.3 x 12 cm/ 3.27 x 4.7 inchMetal referee whistle: referee whistle is made of stainless steel with nylon lanyard; Yellow ball helps adjust the length of the lanyard to make it fit to your neck sizeReferee card wallet: the wallet holds one red and one yellow plastic warning card and easy to bend back and not easy folded brokenSpecial and simple design: special wallet design allows referees to take out cards easily and fast; And this referee card set and coach whistle easily into your pocketweight20g