This warm double-layer hat has built-in insulating air spaces between the layers. The hat uses two yarns: the inner yarn is the only one that touches the head and occasionally appears on the public side of the hat. The exterior colour only ever appears on the outside of the hat. The air spaces are creating by working more rounds on the exterior fabric than on the interior layer.
The newly updated pattern features an alternate top I like to call the Space Cadet option!
This pattern features detailed written instructions and diagrams.
An accompanying eight part Tutorial is also available.