A bobble is a small raised bump you knit into the fabric
A bobble is a decorative knitted bump that sits on top of your fabric. You create it by working multiple stitches into a single stitch, then decreasing them back down to one stitch. The result is a small, textured ball that adds visual interest to sweaters, hats, blankets, and other projects.
Bobbles work best on stockinette stitch (knit on the right side, purl on the wrong side) because they stand out clearly against the smooth background. You can scatter them randomly, arrange them in rows, or cluster them in patterns. Most bobbles take about five rows to complete, though the exact number depends on how large you want them.
Key Takeaways
- A bobble starts by knitting five stitches into one stitch, then decreasing those five stitches back down to one over the next four rows.
- The most common bobble uses knit stitches on right-side rows and purl stitches on wrong-side rows to create a rounded shape.
- You can make bobbles larger by working more rows or smaller by using fewer stitches in the initial increase.
- Bobbles work best on stockinette stitch fabric where they have a smooth background to stand out against.
Step 1: Increase five stitches into one stitch
On a right-side row, work to the stitch where you want the bobble. Knit into the front of the stitch, but do not drop it from the left needle. Knit into the back of the same stitch, still without dropping it. Repeat this process two more times so you have knitted into the front, back, front, and back of the same stitch. Now drop the original stitch from the left needle. You now have five stitches on the right needle where there was one before.
This increase creates the base of your bobble. The five stitches will become the raised bump. If you want a larger bobble, you can knit into the stitch six or seven times instead, but five is the standard size for most projects.
Step 2: Purl across the bobble stitches on the wrong-side row
Turn your work and purl across all five bobble stitches on the wrong side. This row creates the rounded shape of the bobble. Do not decrease yet — you are building height first. After purling the five stitches, continue purling the rest of the row as normal.
The purl row is important because it pushes the knit stitches forward and creates the three-dimensional effect. Without this row, your bobble would look flat and less defined.
Step 3: Knit across the bobble stitches on the next right-side row
Turn your work again and knit across all five bobble stitches. Do not decrease yet. Continue knitting the rest of the row as normal. You are still building the height of the bobble at this point.
After this row, you have completed two rows of the bobble. The stitches are starting to stack up and create that raised bump effect.
Step 4: Decrease the five stitches back down to one
Turn your work and purl across the five bobble stitches again. On the next right-side row, you will decrease all five stitches back down to one. Slip the first bobble stitch knitwise, knit the next two stitches together, then pass the slipped stitch over the decrease. You now have three stitches. Knit two together. You now have two stitches. Slip the first stitch, knit the last stitch, and pass the slipped stitch over. You now have one stitch.
This decrease closes the bobble and anchors it to the fabric. The bobble is now complete. Continue knitting the rest of the row as normal. The bobble will sit on top of your fabric as a small, rounded bump.
Adjusting bobble size and appearance
The standard bobble uses five stitches and four rows, but you can change both numbers to suit your project. A smaller bobble uses only three or four stitches in the initial increase and three rows total. A larger bobble uses six or seven stitches and five or six rows. Experiment on a swatch to see what size works best with your yarn weight and stitch gauge.
You can also change the texture of the bobble by using different stitches. Some knitters use purl stitches on the right-side rows to create a bumpier, more textured bobble. Others use yarn overs instead of knitting into the stitch multiple times, which creates a looser, more open bobble. The standard knit-and-purl method creates the most defined, rounded bobble.
Where to place bobbles in your project
Bobbles work best on stockinette stitch because they contrast with the smooth background. You can place them randomly across a sweater front, arrange them in vertical or horizontal lines, or cluster them in a specific pattern. Many knitters place bobbles along the edges of a sweater or hat for a decorative border.
Plan your bobble placement before you start knitting. Mark the rows and stitches where you want each bobble using stitch markers or a pattern chart. This prevents you from placing bobbles too close together, which can make the fabric look crowded and distorted. A good rule is to space bobbles at least four stitches apart horizontally and at least six rows apart vertically.
Frequently Asked Questions
Can I make a bobble on a purl stitch instead of a knit stitch?
Yes. Instead of knitting into the stitch five times, purl into it five times. Then work the next four rows in reverse — knit on the wrong-side rows and purl on the right-side rows. The bobble will look the same, just worked from the opposite side of the fabric.
What if my bobble looks loose or uneven?
Tighten the stitches around the base of the bobble by pulling the yarn firmly as you work the first few stitches after the decrease. If the bobble itself looks uneven, make sure you are knitting and purling consistently across all five stitches. Loose tension on the increase row will make the bobble sag.
How many bobbles can I fit on a sweater front?
This depends on your yarn weight and desired spacing. On a medium-weight yarn, you can typically fit one bobble every four to six stitches horizontally and every six to eight rows vertically. Start with a swatch to see how many bobbles look balanced on your fabric without making it feel crowded.
Do bobbles work on ribbed or textured stitches?
Bobbles show up best on smooth stitches like stockinette, but you can add them to ribbed or textured fabrics if you want. They will be less noticeable because the background is already bumpy. Plan your bobble placement carefully so they sit on knit stitches rather than purl stitches or texture stitches.