Amazon Essentials Mens Modern Oversized-Fit Cotton Button-Down Shirt – Medium

Available in all sizes, for a few pence more.
Other colours and sizes also available at similar price points.
OVERSIZED FIT: Comfortable roomy fit through shoulders, chest and waist
COTTON OXFORD: Soft and durable cotton shirting with a hint of stretch
MODERN BUTTON DOWN SHIRT: Essential update to a classic with a more generous fit, wear on its own or over a T-shirt
DETAILS: Spread collar, chest pocket, button front closure, long sleeve with placket, back pleat on yoke
GARMENT LENGTH: 28 1/2 (72.4cm) from side neck on UK size M