The two buttons are the only closure, below them the front does not close so best to wear over tank or tee
Measurements lying Flat are approximately:
Top of the shoulder to the hem 21"
Armpit to Armpit 19"
Sleeve Length 9"
Around the bottom of the Hem 40"
Please compare the measurements with something you have that fits well and you like
I'll be happy to know if you have any questions or concerns or issues before leaving feedback so I may help you
Thank you so much for looking