Sizing Guide: Slipper is slightly narrow in width,if you have wide feet, we recommend buying a size uper.KIDS:EUR21-25: Inner length 12.5cm-15cmEUR26-30: Inner length 16cm-18.5cmEUR31-34: Inner length 19.5cm-22cmADULTS:EUR35-36: Inner length 22cm-22.5cmEUR37-38: Inner length 23.5cm-24cmEUR39-40: Inner length 24.5cm-25cmEUR41-42: Inner length 25.5cm-26cmEUR43-44: Inner length 26.5cm-27cmBoots material: 100% genuine leather and sheepskin, with warm real wool inside. The sole is non slip and wear-resistant rubber. Sheepskin Lining and Sockliner: Dyed SheepThe fur on the shoe mouth is real raccoon furKeep Warm: Insulation shell with soft real fur lining, keep your feet warm and cozy from extreme weather, let this winter no longer coldAnti-Skid & Durable: Flexible rubber sole provides a sturdy and secure footing on any slick ground