Impervious by Kim McBrien Evans


by Kim McBrien Evans
November 2018
Fingering (14 wpi) ?
24 stitches and 24 rows = 4 inches
in garter stitch
US 4 - 3.5 mm
1200 yards (1097 m)
203 cm/80” long (along neck edge) & 81.5 cm/32” deep
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Impervious: An Optical Delusion Pattern

Walk through fire
Unfazed by the storm
Stand tall and fierce
You are impervious

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Impervious is a vortex shawl that uses specifically dyed yarn and short rows to create layers of wave or flame shapes.

Click to see kits with yarn dyed specifically for this pattern

Current version: v 1.0

Sample uses Indigodragonfly CaribouBaa 100% superwash merino; 398 m/435 yds per 100 g; 3 skeins

If substituting yarn:
In order to see the wave pattern appear, choose a colourway with 2-3 distinct colours or tones, and lengths of colour 10-18 cm/4-7 inches long.


203 cm/80” long (along neck edge)
81.5 cm/32” deep

In garter stitch: 24 sts and 24 garter ridges per 10 cm/4”
In stockinette stitch: 20 sts and 32 rows per 10 cm/4”

Use needle size required for you to get the above gauges.
Guideline: needles in the range of 3.5 mm/US 4 to 4 mm/US would be a good place to start. I am a loose knitter and used 3.5 mm/US 4 needles to get the above gauge.


  • Needles of your choice (size needed to get gauge. See gauge notes for guidelines for choosing a needle size). 80 cm/32” or longer circular needle is recommended.
  • Dice: 1 set of polyhedral dice or 1 x d4 (4-sided), 1 x d6 (standard 6-sided) and 1 x d20 (20-sided) OR a random dice roller (for example:
  • stitch markers: both removable and stationary
  • tapestry/yarn needle

pattern support: