Related Clues:

• Sock inserts
• On one's __ (alert)
• Some are big, some are little
• Pair on the ground
• Sock sections
• Dogs, in slang
• Tot's little piggies
• Where nails shouldn't be hammered
• Ballerina's strong points?
• Parts of socks
• 'Piggies'
• Certain digits
• The 'ten' in 'hang ten'
• Pump fillers
• Boot inserts?