YOU NEED TO PROVIDE THE FATHER'S SIZE AND CHILD'S AGE FROM THE ASK THE SELLER SECTION. SIZES ARE STANDARD AND CHILDREN'S T-SHIRTS STARTS FROM 4-5 AGE; A total of 2 T-shirts are sent, one for the father and the other for the son. QUALITY DOMESTIC PRODUCTION COTTON BLACK T-SHIRT IS USED; T-shirt Size and Measurements for FATHER Are As Follows WIDTH LENGTH; XS 44 cm x 60 cm ; S 48 cm x 65 cm ; M 51 cm x 69 cm ; L 54 cm x 73 cm ; XL 57 cm x 76 cm ; XXL 60 cm x 80 cm ; T-shirt for Boys Up to 5-12 years old; FEATURES OF T-SHIRT FOR FATHER AND SON * 100% Cotton Soft Quality Fabric Suitable for Hot Printing;