Related Clues:

• Cobbler's stock
• They're fit to be tied
• Undersides
• Sneaker bottoms
• Foot pads
• Spikes
• Arch locales
• Pumps have them
• Shoestrings
• Ties
• Loafer's lack
• Adds punch to punch?
• Parts of feet
• Shoe features
• Makes more powerful?