These are Fila Skeletoes EZ Slide drainage shoes in blue and black.Design: These minimalist "five-finger" style shoes are designed for water activities and outdoor sports.Features: They feature a drainage system in the soles to allow water to pass through, synthetic uppers, and hook-and-loop closures for an adjustable fit.Purpose: These shoes are often used as barefoot sneakers for hiking, gravel, mud, or general water use.