Related Clues:

• Undersurfaces
• Heels are attached to them
• Oxford foundations?
• Seats
• Pump parts
• Golf-club parts
• Loafer bottoms
• They're always underfoot
• Shoe sections
• Pajama parts
• Slippers' undersides
• Ones underfoot?
• Foot features
• Shoemaker's inventory
• They may pound the pavement