Related Clues:

• Envelope of silk
• Site of a moth’s emergence
• Caterpillar casing
• Wrap up gently for protection
• Safeguard two companies working
• Case for an entomologist
• Protect two companies, one briefly
• Pupa protector
• Case spun by a silkworm
• Silk wrap from Chanel maybe being worn
• Caterpillar's cover