Loungewear should be just as luxurious as the rest of your wardrobe and Polo Ralph Lauren seems to agree. These sweatpants are crafted from one of the worlds most indulgent fabrics - cashmere - meaning the pair is impeccably soft and ready to serve you on your next well-deserved lazy day at home. How to wear Harrods: Style with a cashmere hoodie and low-top sneakers.