Here's what other sites are saying:
The Macpac Sleepyhead is designed to maximize your little one's comfort while riding in their carrier. The Sleepyhead not only acts as a headrest when your passenger dozes off but also stabilizes your child's head while trekking over unstable terrain. The fleece covering on the Sleepyhead is easily removed for washing.
This padded neck support (sold separately) offers both comfort and protection when your passenger dozes off. Padded neck support for comfort and pro...
- Ramsey Outdoor