Related Clues:

• Wind into rings
• Kevin, in ''Superman Returns
• Mattress layer
• Loop of wire, e.g.
• Roll of postage stamps
• Spring winds?
• Electromagnet component
• Slinky, for one
• Mattress features
• Wind into spirals
• Snake shape
• Spring, essentially
• Snake's posture, sometimes
• Rattlesnake's shape
• Slinkys, essentially