I have gotten a chance to buy some clothes at COS before my traveling to Russia. Honestly, I was surprised by the quality of clothes. The quality of fabric is nice and the pattern consists of straight lines. Right away one can see that the brand is from Scandinavia. I think good quality and minimalism are the main features of Scandinavian style.
I did not know, but it is interesting that COS, Collection Of Style, was established in 2007 under the H&M Group. Nowadays Swedish design concept is very popular not only across Europe, but also across America.
P.S. I have noticed that blue and white colors are the main colors of my current wardrobe. I think they are going to be the basic colors of my summer outfits ;)