They're made from fleece-lined swimwear fabric that kind of pills terribly after a wash.
(I wash in cold water on a gentle cycle with Dreft and no fabric softener.)
Lilax Girls Basic Length Leggings Girls' Clothing in Leggings
52 Review
Slaixiu Leggings Fleece Printing GP777 3P B 130 Girls' Clothing and Leggings
54 Review
Spotted Zebra Girl's Disney Star Wars Marvel Frozen Princess Leggings: Unleash the Fantasy!
46 Review
Kid Nation Unisex Heather Charcoal Girls' Clothing for Leggings
52 Review
Hollhoff Gymnastics Playgrounds Shorts - Breathable Clothing for Girls
48 Review
Amazon Essentials Little Short Sleeve Leotard Girls' Clothing for Active
61 Review
Eocom Pairs Childrens Winter Animal Girls' Clothing
64 Review
C9 Champion Girls Supersoft Bright Girls' Clothing and Active
46 Review