Korkers All Axis Shoe (with interchangeable felt sole) – Bear's Den Fly Fishing Co.
Amazon.com: Korkers Greenback Wading Boots - Packed with the Essentials - Includes Interchangeable Felt and Kling-On Soles - Size 7 : Sports & Outdoors
Korkers FB4310 BuckSkin Boot with Kling-On and Plain Felt Soles - 10
Gear That Works: Korkers Interchangeable Sole Boots | MidCurrent