Even from the wool slippers, I am convinced about the quality of the company Nanga. The shoes seem comfortable, my son can quickly dress and undress without difficulty. It is true that the rubber coating of the sole dissolves relatively quickly to the most belastetetn points (va circular on the heel). Nonetheless they fulfill their purpose even then without my son gets to slide. The "summer model" has to be a larger number ordered definitely. The 31er size falls from here, such as the 30 Winter model, which I believe To Size.