Possible Clues:

• Champion golfer's yarn
• Could so small a bed weigh so much if it's made of this material?
• The material to make a very little bed very heavy
• Made of this stuff a little bed gets a big weight
• That's the stuff to make the bed so heavy
• Cloth adds great weight to bed
• ___ candy (sweet carnival treat)
• Second wedding anniversary material
• Natural cloth
• Substance like fine wool