Waistcoat by Only Sons, Take that dress code up a level, Button placket, Contrast back with an adjustable cinch, Skinny fit - cut very closely to the body. Quality craftsmanship is at the forefront of Danish brand Only Sons, whose signature designs include classic knitwear, relaxed sweats and denim. Using a range of high quality fabrics, theirs is a seamlessly crafted collection for laid-back style.