One of my favourite cloud formations is the mackerel sky. I have tried to capture this rippling pattern in this beanie hat, so that you can walk under such a sky any time you want. This hat features a deep brim, which can be folded over to show off the tubular cast-on edge. The hat is worked flat, then seamed along the back edge to finish. Choose two strongly contrasting colours for maximum oomph from colour work design.

In order for the hat to fit snuggly, there is negative ease built into the pattern. This means that the finished size is smaller than the size of head it will fit. Please take this into account when choosing which size to knit.

Techniques:
Tubular cast-on (optional), knit below, decreasing, seaming.

Measurements:
Adult size (S, M, L) to fit head circumference 20(22,24) inches 50(55,60) cm.
Finished size: 17.25 (19.5, 21.5) inches 43.5(49,54.5) cm.

Low Vision and Screen Reader information

Font is a minimum of 24 point, black and Verdana throughout.
No italics are used.
Single column text throughout with one inch margins.
All images and schematics are placed in line with the text, have alt text and a caption.
If a chart is used, full written instructions are provided as well. It is not necessary to use the chart to work the pattern.
Text is left justified, with no headers or footers.
No tables are included in the pattern.
Internal links are provided where necessary.
Pattern is presented in sequential order whenever possible, and internal links are provided if not.
Abbreviations are written out for screen readers.
Repeats are formatted with * and no brackets.
Pdf has navigational tags
Tested using NVDA software.

With thanks to my technical editor Jo Torr.
Photo credit: backdrop of the mackerel sky:
https://www.flickr.com/photos/arg_flickr/22079473016