Zimmerli‘s slogan is “The World’s Finest Underwear” and while they offer very fine cotton underwear as well as Modal underwear, they lack the finest underwear material in the world today: MicroModal Air. As such, we have to disagree with them.
Starting at about $60 and going upwards of $150, Zimmerli has developed quite the reputation for their men’s underwear. We have tested six pairs of underwear over four years, and while they are in fact a stable performer and comfortable, we think that their styling is a bit too conservative, and the value proposition is not as good as other luxury brands. Their cotton is very fine long staple cotton and just like other manufacturers they buy it from specialists. Their Egyptian or Sea Island cottons are fine but it is not clear from the tag whether it is West Indian Sea Island cotton or not.
Zimmerli boasts a large product portfolio with slightly differing cuts, which are supposed to guarantee the maximum comfort. For example, their Royal classic line you have to choose between 17 models, which means you have to invest a lot of money upfront before you have one pair of underwear that suits you best. They also do not offer MicroModal Air in their lineup, which is finer and softer than any cotton Zimmerli offers.
It really seems that you pay a premium for the brand name and “Made in Switzerland”, and while their cotton is of very high quality, it is not the finest material in the world. If you like the conservative color range and styling you should look into Schiesser as well. Unlike others, Zimmerli offers silk underwear, but it is most difficult to maintain, and therefore it is not a good everyday option in our opinion.