The Karl long-sleeve shirt in windowpane check is crafted from linen with a hint of cotton for softness. It features hidden button-down collar, a curved hem that can be worn tucked or untucked, and notched cuffs adjustable for a custom fit-wear them snug or loose. The combination of both fibers balances the crispness of linen with the softness and resilience of cotton to create a comfortable shirt perfect for any occasion.