Replace the "plastic" liners in your kids' boots with these 9mm Navy Blue pressed wool felt (minimum 75% wool).  Your little ones' feet will stay warmer, drier & happier when cushioned in wool!  Fits most youth size boots with removable liners.  As with our adult boot liners, the replacements willld push into the boot with a bit of force.  When worn several times the liner will compress and conform to your child's feet creating a comfortable fit.