STRIPES FOR A STRIKE: You always need to have a slim, round-neck sweater in your wardrobe that you can easily wear under a small down jacket. A sweater that will make you feel comfortable all day long and will allow you to walk the streets of Amsterdam with maximum comfort. Here it is! With 30% wool, this round neck sweater will keep you warm this winter. Its navy and black shades blend perfectly together. A deep blue that dœsn't leave us indifferent. Blue Industry brand product.