Thermocline

Thermocline is a free mosaic knit square pattern worked in slip-stitch, using six shades of Cascade Heritage fingering weight yarn. Part of the Year of Color 2026 MAL, this square uses a sliding color sequence that moves from pale sky blue through deep navy, with a deliberate reordering of the yarns about a third of the way up to explore how the same colors read differently in a new sequence. The mosaic technique works one color at a time. Slipped stitches carry the resting color through the fabric, creating a woven, textured look that’s much simpler to knit than it appears. The square is worked flat. The name comes from oceanography: a thermocline is the boundary layer where warm surface water meets the cold depths below. That’s exactly what this square does in yarn. * 5781 Clear Sky * 5630 Anis * 5745 Riviera Heather * 5604 Denim * 5637 Cerulean * 5603 Marine