Number Thirteen design. Large 13 number design for people who where born in 2013, people who 13 is their lucky number or sports fans who support a player with the number 13 on their jersey. Varsity style number design, college number design. For matching family presents where everyone has a different number. Great for people who are 13 years old, their year of birth was '13 or it is their favourite sports number, great present for supporters and fans. Number from a sports jersey. 8.5 oz, Classic fit, Twill-taped neck