A short-sleeved t-shirt with a rounded neck. 

T-shirt

A short-sleeved t-shirt with two buttons at the neck. 

T-shirt With Buttons

A short-sleeved t-shirt with a pocket on the front. 

A speec bubble with three Z letters, indicating sleep.

Dog sitting down and chilling with its tail raised.

A busy and overworked manager or employee surrounded by charts, graphs, and notifications.