Muck Boots Rugged II Boots - Kids Realtree 6. Size: Child 7-8 approximately 3-4 years old (pre school) Size: Child 9-10 approximately 4-5 years old (pre school) Size: Child 12-13 approximately 5-6 years old (grade school) Size: Youth 1-3 approximately 7-8 years old (grade school) Size: Youth 5-7 approximately 9- 11 years old (grade school) Specifications for Muck Boots Rugged II Boots - Kids: Manufacturer: Muck Boots Gender: Unisex Age Group: Kids Kid's Shoe Width: Medium Boot Style: Work Boot Footwear Type: Boots Activity: Hiking Fabric/Material: Rubber Footwear Upper Fabric/Material: Rubber/Neoprene Insole Material: EVA Water Resistance Level: Waterproof Condition: New Lining Material: Air Mesh Outsole Material: Aggressive/Durable/Slip-resistant Aggressive durable and slip-resistant Features of Muck Boots Rugged II Boots - Kids 100percent Waterproof 5mm Neoprene Bootie for Comfort and Performance Warm Fleece Lining Extended Rubber Coverage EVA Midsole for Added Comfort Rugged Outsole for Traction and Durability Package Contents: Muck Boots Rugged II Boots - Kids Muck Boots RG2-RTE-RTR-060: Rugged II Boots - Kids Realtree