Product detailed description Shoe type – children's winter shoes with membrane and wool Shoe shape width – shoes fit an average wide to wider foot toe part – the shoe has an ideal shape, it is also optimal for the dominant thumb instep – shoes are suitable for feet with a medium to high instep heel - the shoes are narrower in the heel and are therefore suitable for flipper feet Opatek - lightly reinforced with several layers of material Sole - 4 mm, highly flexible, made of natural rubber, zero drop Insole - insulated removable, without anatomical shaping Fastening - they can be easily tightened with two Velcro straps even on a thin ankle Other TEX membrane for higher water resistance extended version W - slightly wider in the toes, suitable for a higher instep Materials: upper: combination of smooth and brushed leather lining: wool felt sole: rubber Made in Portugal. Koel4kids Kurt W Tex Merino Jeans winter barefoot shoes