The socks themselves are fine. The markers are pretty cheap and flimsy, not wet enough and will pull the fibers off the socks until there are little colored clumps at the ends. It's a fun concept but the markers need to be replaced or just use fabric paint with a brush.
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
Tommy Hilfiger Girls Crop White Girls' Clothing
54 Review
Dancina Toddler Leotard Flutter Sleeve Girls' Clothing for Active
55 Review