Great layer and in a not too heavy not too light 225 GSM cotton jersey.
Cut a little looser so you can wear it over another tee.
FABRIC: 100% Organic Cotton 225 GSM
FIT: Boxy, Loose Fit
FEATURES: Rib neck
CARE: Cold machine wash
MODEL: wears a size medium. He is 6'1" (185cm) tall with a 38" (97cm) chest and 31" (79cm) waist.