These are Hanes Unisex EcoSmart Fleece Sweatshirt.  They are soft and plush, this cozy pullover sweatshirt is made from a midweight blended fabric featuring cotton sourced from American farms.
Features
7.8 oz., 50% cotton, 50% polyester
Made with up to 5% recycled polyester from plastic bottles
Patented, low pill, high-stitch density PrintPro® XP fabric
Double-needle coverseamed neck and armholes
Ribbed waistband and cuffs
Tag-free neck label