My foot stays very warm with Niki! Niki is warm with 100 % lambskin and has a patched upper leather. Whether classic or with printed leather - one is safe - the feet are warm! The entry can be varied by the laces and the width can be regulated. The removable leather inner sole is softly padded. The raised cap protects the toes and makes the shoes very hard -wearing, and the profile also offers good hold on damp and slippery soils. As with all models, we only use chrome -free leather and do without any reinforcements in the shoe. This means that the rolling process is not disturbed and the little ones can explore the world without being limited. Upper: 100% chrome -free vegetable tanned leather inner material: 100% lambskin outer sole: rubber sole = 100% plasticizer -free sole: 100% lambskin