ShaLenz stated that the set had a buttery feel to it and at first I was trying to imagine it prior to getting my set and OMG! I see what she means. This set is sooo soft and comfortable. I would say it's more like whipped butter as a material, lol. It is lightweight but not thin. I love that the cuts on the shirt are low enough that don't really show my sides but even if they were higher the pants fit as high-waisted pants. For this to be an XL, the set fits perfectly especially the upper body. I have thick arms and some extra love in the tummy. The shirt covers everything and the shirt was not tight around the arms which is always something I worry about with shirts. Definitely a must-have set for the cooler weather!