Nike Flex Plus Unisex Kids Slip On Running Shoes Black-University Red Size 5.5. Get ready to run in style with these Nike Flex Plus slip-on sneakers. With a sleek design in black and university red, these shoes are perfect for both boys and girls. The unisex kids' shoes come in a size 5.5 and are great for athletic activities. Made for comfort and performance, these sneakers are perfect for young athletes. The slip-on design makes it easy to get them on and off, while the flexible sole ensures a comfortable fit all day long. Add these Nike Flex Plus sneakers to your child's shoe collection today! Preowned, no significant signs of wear, this kids size 5.5 can fit a womens 7.5.FNN #0238