How to Design Knitwear: Yarns, Gauges, and Construction
How to design knitwear — covering yarn selection, gauge specification, construction methods, and creating production-ready tech packs for knitted garments.
Knitwear design fundamentals
Knitwear design differs fundamentally from cut-and-sew garment design. Knitted garments are constructed by interlocking loops of yarn rather than cutting fabric pieces and sewing them together. This means your specifications focus on yarn, gauge, stitch patterns, and shaping rather than fabric and seam construction.
Yarn selection
Yarn determines the character of your knitwear:
- Fiber: Merino wool, cashmere, cotton, acrylic, nylon, blends
- Yarn count: Determines thickness — lower numbers = thicker yarn
- Ply: Number of strands twisted together — 2-ply, 4-ply, 8-ply
- Hand feel: Soft, crisp, lofty, smooth, textured
- Performance: Pilling resistance, washability, shape retention
- Price: Cashmere and merino are premium; acrylic and cotton blends are value
Gauge and stitch specification
Gauge defines the density of the knit — how many stitches and rows per inch. It is determined by the machine gauge (number of needles per inch) and yarn weight.
Specify stitch patterns for each panel: jersey, rib, cable, pointelle, jacquard. Include stitch pattern placement and any transitional details between different patterns.
Construction methods
Knitwear can be constructed in several ways:
- Fully fashioned: Panels are knitted to shape and linked together — highest quality
- Cut and sew: Knitted fabric is cut and sewn like woven fabric — lower cost, more waste
- Whole garment (seamless): Knitted as a complete piece with no seams — premium production
- Hand knit: Individual hand-knitted pieces — artisanal, highest cost
Knitwear tech packs
Knitwear tech packs need additional specifications beyond standard garments. Include yarn composition and supplier, gauge specification, stitch pattern diagrams, panel shaping instructions, and linking/seaming method. Specify how the garment should be finished — blocking, steaming, or pressing — as this affects the final dimensions.