According to the Patrik Ervell website, these Portuguese-made Button Collar Shirts have “pointed collars with a sharp right angle [and] matching right angles on the chest pocket and cuffs.” Psh, what is this, a geometry class? Nerds. Additional details include a signature grosgrain tab on the chest pocket and shell buttons. Grab one for (the area of a triangle with 6 base and 10 height)% off at Patrik Ervell.

For price and purchase info, visit Patrik Ervell.