There must be at least 6 inches of clearance between the top of your footwear and the base of your PEET Dryer. So, when you want to dry taller boots (over 10 inches tall), hip boots or waders, please use: *One pair 12-inch extensions for hip boots *Two pair 12-inch extensions for chest waders PEET Extensions Benefits: -Extends the usefulness of your PEET Dryer -Safely dries tall boots, hip boots, waders -Ideal for all types of materials including leather, PVC, rubber, neoprene, canvas, synthetics, cloth, fleece, felt, micro and all modern fabrics 12-inch Model No.: H2 Warranty: 2 years Fits: Original, Propane, Multi, Wader, Advantage and PeeWee PEET Dryers