The Allbirds Tree Runner in Blue Navy is a sustainable and eco-friendly athletic sneaker designed for women in size 8. Made with a knit fabric upper and featuring a medium width, this classic sneaker is both stylish and functional. The washable design makes it easy to keep clean and maintain, making it a practical choice for everyday wear. With its sustainable materials and classic style, the Allbirds Tree Runner is a great option for those looking for both fashion and environmental consciousness in their footwear choice.