One of the most recognisable names in the world when referencing the realm of loungewear, <a href=" http://www.selfridges.com/GB/en/cat/Calvin-Klein/womens/" style="text-decoration: none"><font color="black"> <b>Calvin Klein</b></font></a> has been creating classic sleepwear in Manhattan since 1968. Yet another fine example of quality craftsmanship, these straight-cut <b>pyjama bottoms</b> are made from breathable cotton with a vibrant print. The lightweight weave is supported by a narrow waistband complete with signature branded drawstring for a custom and ultra-comfortable fit. &nbsp;