These are warm and soft. However, they do not stretch and therefore do not have much flexibility. My daughter wears a size 8. I took her size 10-12 hoping she would have room to grow and not lose her too soon. However, the legs were very tight in her calves and thighs and loose in her thighs and waist. (She has a butt, so clothes don't usually hang around her waist.)
Lilax Girls Basic Length Leggings Girls' Clothing in Leggings
52 Review
Girls' Clothing and Leggings - Govc Winter Fleece Velvet Leggings
49 Review
ZukoCert Fleece Leggings Cashmere 2P B 130 Girls' Clothing for Leggings
61 Review
Kid Nation Unisex Heather Charcoal Girls' Clothing for Leggings
52 Review
Thermajane Girl's Cozy and Comfy Thermal Underwear Long Johns Set with Fleece Lining
46 Review
C9 Champion Girls Supersoft Bright Girls' Clothing and Active
46 Review
Amazon Essentials Little Short Sleeve Leotard Girls' Clothing for Active
61 Review
Dancina Toddler Leotard Flutter Sleeve Girls' Clothing for Active
55 Review