Possible Clues:

• Study about carbon dioxide that's broken down protective cover
• Protective case for insect
• That's a pup, a firm double on it
• Silky sheath around chrysalis
• How to make a pup a thing twice as firm on the end
• That will make a pup a double firm on the end
• Wrap fashion designer has on
• Silk wrap from Chanel maybe being worn
• Chrysalis casing
• Place to get wings?