T-shirt size chart

  XS S M L XL XXL
Chest - inch 36 38 40 43 45 47
Chest - cm 91 97 102 108 114 120
Length - inch 25 26 27 28 29 30
Length - cm 66 68 70 72 74 76

T-shirts are unisex regular fit. 

Will is 5ft 11in and wears Large.

Sasha is 5ft 5in and wears XS.