Men's Nunn Bush Kore Pro Bicycle Toe Slip-Resistant Loafers The Nunn Bush KORE Pro Bike Toe Slip On has a classic design that combines sophistication with the best in comfort technologies. Featuring a genuine leather upper and their signature KORE technology, it also offers the comfort of a fully cushioned Memory Foam footbed with Softgel heel pod for a look that’s guaranteed to last!