According to the Nike website, a 4Y is the equivalent of a women's size 5.5. 2017 Nike Huarache Grey Wolf Youth Athletic Shoes | Multi-Size US 4/UK 3.5/EU 36 | Model 654275-032 Nike Huarache Athletic Running Shoes designed for versatile performance and year-round style. These youth unisex sneakers combine modern athleticism with classic comfort, perfect for school, sports, and casual wear. Product Specifications: Brand: Nike Huarache Size: US 4 / UK 3.5 / EU 36 / AU 4 Color: Multi-Color Grey Wolf Style Code: 654275-032 Department: Unisex Kids Key Features: Breathable synthetic upper material Comfortable foam insole Durable rubber outsole Standard width fitting All-season versatility Performance & Activities: Ideal for running, jogging, and track activities Perfect for school and daily wear Great for indoor/outdoor sports These Nike Huarache sneakers combine performance features with versatile style, making them perfect for active youth who need reliable footwear for multiple activities. Condition: these sneakers are in very good used condition. They show general signs of shoes that have been used before. They have marks & discoloration on the soles. Overall, they are a really good pair of shoes with plenty of life left in them. #Nike #Sports #Kids #Women