Halo is a French-style Tam Hat or Beret using simple garter and stockinette stitch.
The pattern is written for beginners in an expanded format.
It is not about complicated techniques, but about doing the simple techniques well and showing off the qualities of the yarn.
It uses one skein of a light DK yarn. In the main part of the hat, a second yarn of mohair and silk is incorporated, but still using small needles, to create a change in colour and thick felt-like fabric with a halo, for which the hat is named.

Sizing:
Head circumferences of approximately 55-58cm (21.5 – 22.5 inches)

Yarn:
Band and main part of hat - a light DK yarn recommended for 3.5mm to 3.75mm (US 4 or 5) needles, with a gauge of about 24 stiches and 33 rows to 10cm (4 inches) in stockinette. (e.g. Rowan Felted Tweed, 50% merino wool, 25% alpaca and 25% viscose, 175m per 50 grams; or Isager Tweed, 70% wool, 30% mohair, 199 m per 50 grams)

A second fine yarn is incorporated into the main part of the hat to provide the halo (e.g. Rowan Kidsilk Haze 70% mohair, 30% silk 210m per 25 grams; or Isager Silk Mohair 75% mohair, 25% silk 212m per 25 grams)

The hat in the image is worked in Rowan Felted Tweed shade ‘Seafarer’ and Rowan Kidsilk Haze shade ‘Navy’.

Yardage:
Light DK/sport yarn – 150 m / 164 yards
Fine mohair silk – 110 m / 120 yards

Needles
Round 3.25mm (US 3) needles for the band.
Round 3.75mm needles (US 5).
Four 3.75mm (US 5) double pointed cable needles for working the centre of the hat.

Gauge
23 stiches and 33 rows, to 10cm (4 inches) in stockinette with two yarns worked together.