Dress like you raided your country club's lost and found (in the best way) choosing the Hey Dude Wally Tri Nu Prep. These warm weather-ready go-to are a seersucker lover's dream, featuring a wild mix of stripes and preppy prints for a look that's an Cotton upper and lining. Slip-on style with an elasticized lace front. Flex & Fold Technology: This supports healthy feet with its unique shape giving complete freedom of movement. Branding on the tongue and back heel tab.