These pants should not be tumble dried. I don't see this anywhere in the description, but the tag has a crossed out dryer symbol. See the care guide photo I've added. This probably explains why a lot of people find they roll off really quickly as I would expect the dryer to make things worse. I wash them inside out on a gentle cycle and let them air dry and there is minimal pilling. My daughters don't particularly like the tailored fit of these pants and complain that they are too bulky (perhaps high waist?) preferring their OshKosh or Old Navy fleece leggings instead. The density and color of the fabric is pleasant. But the gentle air drying cycle is not very suitable for children's clothes.
ZukoCert Fleece Leggings Cashmere 2P B 130 Girls' Clothing for Leggings
61 Review
IRELIA Girls Leggings Modal Spring Girls' Clothing for Leggings
52 Review
Girls' Clothing and Leggings - Govc Winter Fleece Velvet Leggings
49 Review
Lilax Girls Basic Length Leggings Girls' Clothing in Leggings
52 Review
Amazon Essentials Little Short Sleeve Leotard Girls' Clothing for Active
61 Review
C9 Champion Girls Supersoft Bright Girls' Clothing and Active
46 Review
Thermajane Girl's Cozy and Comfy Thermal Underwear Long Johns Set with Fleece Lining
46 Review
Dancina Toddler Leotard Flutter Sleeve Girls' Clothing for Active
55 Review