Birkenstock has successfully created footwear that can look good with literally anything a person is wearing. The traditional ones look great with jeans for people attending a chilly indoor basketball game in the fall and the colorful ones for the athletes in halftime. The traditional ones can be used in formal settings, especially in warmer climates, and the colorful ones for people working near water, like aquariums or parks. Birkenstock is the one brand of shoe for men and women that should always be around, until the apocalypse. And when then just put some spikes on them and we can use them in war, like one of the guys in 13 Hours (movie) said to another guy, "You're going to fight the holy war in shorts? Strong move." Even warriors see the satire excellence. We know one soldier would rock the Birk with an M-4.