There are several things I need to say when reviewing the maternity PJs As far as I see there is no size chart for woman, so in a way more difficult to know what the sizing is. I am a UK 14 in some clothes and 14/16 in others. I ordered the XL for the length of the bottoms and I like a bigger size.. On the sellers web page it does state on the pjs there are drawstrings I am assuming around the waist. After looking for it on the bottoms, I can tell you, on mine, the green colour, has NO DRAWSTRING. I am not sure why, but because there isn’t anything to keep the bottoms tighter, I had to give these away to my daughter. The XL are very huge. The elastic around the waist is a just that, a thick wide band of elastic. Extremely loose on my 14/16 body. So as there is no chart, going by myself, I would say the XL is an 18/20+ size. To be fair on my Amazon sellers page, it’s states a large would be suitable for me. The reason I chose the XL purely as I felt large would be too tight. Yes my mistake, and now giving to my daughter. The set is lovely a soft and a decent flap over which pulls across underneath if breast feeding your baby, very discreet. The legs are fairly baggy and these do stretch especially around the waist. It is important to choose the correct size, because on mine there was no drawstring, mine fell down. Both legs have elasticated bottoms, I am 5ft 9” tall and these come above my ankles. Loose fitting with ample room.. I do not know if these are warm, but the material although soft, is thin material. I am not pregnant, however I have medical issues with my tummy, so do not like tight clothes across my chest and breast area… so the flap is an excellent idea, not just for our new Mummy’s. As normal pjs yes these can be worn, no real linkage to the maternity part except the open flap If needed. I do like the pjs and had they fitted me, I would be in them now. At review current price £27.30, a little expensive, but nice all the same. I have taken a star off for.. 1. No drawstring which was advertised 2. The huge sizing and no chart. ⭐️Thank you to the seller ⭐️I hope my review helps you