Lace weight yarn (Craft Yarn Council Category 0) is the finest yarn standard. Known variously as Cobweb, Thread, or 1-ply / 2-ply, it creates ethereal shawls, delicate heirloom christening gowns, and luxurious mohair halos when carried with heavier yarns.
Quick Specifications
What to Knit with Lace Weight Yarn
Lace weight is prized for its high yardage per skein (often 400 to 1,000+ yards per 1.75–3.5 oz50–100 g) and graceful drape:
- Heirloom Lace Shawls & Wraps: Complex stitch patterns like Shetland lace, Estonian nupps, and feather-and-fan bloom into intricate lace when pinned out and blocked.
- Carried-Along Halo (Holding Double): Holding one strand of silk-mohair lace alongside fingering or DK yarn softens the stitch definition and adds luminous color depth.
- Lightweight Summer Tops: Knitted on slightly larger needles for a breathable, gossamer fabric.
Lace knitted fabrics look like rumpled mesh straight off the needles. Aggressive wet blocking—soaking in lukewarm water with wool wash, stretching out, and pinning every point—is where the pattern truly reveals its structure.
Holding Lace Double: the Mohair Halo
The most common use of lace weight in the US right now is not lace at all. A strand of silk-mohair lace held alongside a heavier yarn adds a soft halo, depth of color, and warmth without much weight — the look behind most of the fuzzy sweaters on Ravelry.
- What it does to gauge: surprisingly little. Adding silk-mohair lace to fingering or DK usually keeps you within about 1 stitch per 4 in10 cm of the plain yarn, so most patterns still work. Swatch anyway — the halo makes stitches read tighter than they measure.
- How much you need: roughly the same yardage as the main yarn, since the two strands travel together. A 1,000 yd915 m sweater needs about 1,000 yd of mohair too — but lace skeins are long, so that is often only 2–3 skeins.
- Which pairing to pick: mohair against smooth wool gives the strongest halo contrast. Mohair against another fuzzy yarn muddies stitch definition and is best kept to garter or stockinette.
Mohair grips itself. Frogging a held-double fabric is slow and can shred the halo, so read the pattern through before casting on. Freezing the knitting for an hour makes the fibers release enough to pull back cleanly.
Not sure whether what you are holding is lace or light fingering? Lace runs about 600–1,000 yd per 3.5 oz100 g; cobweb is finer still, and light fingering rarely passes 450 yd. When the ball band is missing, the wraps-per-inch method on the hub settles it.
Recommended US & International Lace Yarns
Here are popular, widely available lace yarns with verified ball-band specifications:
Rowan Kidsilk Haze
70% super kid mohair, 30% silkA mohair-silk lace yarn from Rowan, knitted either on its own or held together with a heavier yarn for extra halo. Its wide gauge range — 18 to 25 sts over 4 in — is what makes it work in both roles.
Malabrigo Lace
100% baby merino woolSingle-ply hand-dyed baby merino at lace weight — 470 yd430 m in a 1.75 oz50 g skein, the longest yardage per gram in this list.
Frequently Asked Questions
Why do lace knitting patterns call for larger needles than the yarn label suggests?
Lace patterns intentionally use needles much larger than the yarn label (often US 4 to US 8 / 3.5–5.0 mm) to create open, airy eyelets and dramatic drape. The smaller needle sizes listed on the ball band (US 000 to US 1) apply to solid, opaque stockinette fabrics like fine gloves or doilies.
How do I measure gauge in lace knitting?
Always block your swatch before measuring lace gauge. Lace patterns expand significantly when washed and pinned open with blocking wires or pins. Measure your stitch and row count across 4 inches10 cm on the relaxed, fully dry swatch.
Can I hold lace yarn with another yarn (double stranding)?
Yes! Holding a strand of lace mohair-silk together with fingering or DK weight yarn is one of the most popular modern knitting techniques. It adds a luxurious soft halo and gentle warmth without significantly changing stitch tension.
Yarn weight categories, their standard gauge ranges and the recommended needle sizes on this page follow the Craft Yarn Council's Standard Yarn Weight System. Needle size equivalents are cross-checked against the CYC knitting needle size chart, and the WPI figures against CYC’s wraps-per-inch chart.