The Outwell Dreamhaven Self-Inflating Mattress features Outwell's® FHF (Flat High-Flow) valve which allows for enhanced air flow for both inflation and deflation. The design features a 3D shape with a deep profile for comfort. The 3D profile is supported by vertical side static fabric panels which do not bend under pressure and help with inflation as less air needs to be pumped. Weight and packed size are reduced further by the use of horizontal air channels. A carry bag with shoulder strap is included for easy storage and carrying.