OCTAVE Mens Warm Fleece Loungewear Pants / Pyjama Bottoms With Drawstring. These loungewear pants/pyjama bottoms are made from 190gsm micro fleece to give a supersoft feel for extra comfort and added warmth. 100% Polyester (190gsm Micro Fleece). Drawstring for fastening. Machine washable at 40 degrees / Do not bleach or tumble dry.