Hey Dude ( Wally Tri Nylon Trailhead - OLIVE ) The product is a pair of Hey Dude slip-on shoes in olive color, designed for men. They are size 9 UK, 10 US, 43 EU, and 9.5 AU. The shoes are solid in pattern, lightweight, and comfortable with an upper made of nylon material. Perfect for casual wear, these shoes are known for their comfort and easy slip-on style.