What a bobble is and why you'd want one
A bobble is a small, raised bump of knitted fabric that sits on the surface of your work. It's made by working multiple stitches into a single stitch, then decreasing them back down into one stitch. The result is a textured, three-dimensional ball that catches light and adds visual interest to sweaters, hats, scarves, and blankets.
Bobbles are purely decorative—they don't change how a garment fits or functions. You'll see them scattered across baby clothes, on the crown of winter hats, or running down the front of cardigans. Some knitters use them as a signature detail; others add them only when a pattern calls for them. The technique takes practice, but once you understand the basic structure, you can make bobbles in any yarn weight or color.
Key Takeaways
- A bobble is made by increasing multiple stitches into one stitch, knitting several rows on those stitches alone, then decreasing them back to one stitch.
- The most common bobble uses five stitches increased from one, worked over three to five rows, then decreased back down.
- You'll need to drop stitches off your main needle temporarily while you work the bobble, so using stitch markers or a spare needle prevents losing them.
- Bobbles sit on top of your fabric, so they work best on stockinette stitch or other smooth backgrounds where they stand out clearly.
- Practice the increase-and-decrease rhythm on a swatch before adding bobbles to a finished project.
The basic bobble structure: increase, knit, decrease
Every bobble follows the same three-step pattern. First, you increase multiple stitches from a single stitch on your main fabric. Second, you knit several rows on only those new stitches, leaving your main work waiting. Third, you decrease all those stitches back down to one stitch and rejoin your main fabric.
The most common bobble uses five stitches increased from one. You'll knit into the front, back, front, back, and front of the same stitch—that's five new stitches from one. Then you turn your work and knit a few rows (usually three to five) on only those five stitches. Finally, you decrease all five stitches down to one using a technique like a slip-stitch decrease or a centered double decrease. The bobble is now complete and sits as a small ball on your fabric.
The size of your bobble depends on how many stitches you increase into and how many rows you knit. More stitches and more rows make a larger bobble. Fewer stitches and fewer rows make a smaller, tighter one. Most patterns specify the exact increase and decrease method, so follow those instructions for consistent results.
How to increase into a single stitch
The increase is the foundation of the bobble. You're creating five stitches where one existed, all from the same loop of yarn. The most straightforward way is to knit into the front of the stitch, then knit into the back of the same stitch without dropping it off your needle. You now have two stitches on your right needle and one on your left.
Repeat this process: knit into the front again, knit into the back again. You now have four stitches on your right needle. One more time: knit into the front of the original stitch. Now drop the original stitch off your left needle. You have five stitches on your right needle, all created from one stitch.
Some patterns use a different increase method, like yarn overs or lifted increases, to create the five stitches. Check your pattern for the exact technique. The key is that you end with five separate stitches on your needle, ready to be worked as a small section.
Working rows on the bobble stitches alone
Once you've increased to five stitches, you need to temporarily set aside your main fabric. Slip all the stitches on your left needle (the ones that aren't part of the bobble) onto a stitch holder, a spare needle, or even a piece of scrap yarn. This keeps them safe while you focus on the bobble.
Now knit back and forth on only the five bobble stitches. Turn your work and purl the next row. Turn again and knit. Most bobbles are worked over three to five rows total—check your pattern for the exact number. The more rows you work, the taller and rounder the bobble becomes. Three rows creates a small, tight bump; five rows creates a more pronounced ball.
Keep your tension consistent while working the bobble rows. Loose tension makes the bobble floppy; tight tension makes it hard to decrease later. Treat the bobble stitches the same way you'd treat any other section of your knitting.
Decreasing the bobble back to one stitch
After you've completed your bobble rows, you need to decrease all five stitches back down to one. The most common method is a centered double decrease (sometimes written as CDD or sl2tog-k1-psso). Slip two stitches together as if to knit, knit the next stitch, then pass the slipped stitches over the knit stitch. This decreases three stitches to one in a single row.
If your bobble has five stitches, you'll need to decrease twice. First, use a centered double decrease to go from five stitches to three. Then use a straightforward knit two together (k2tog) to go from three stitches to two. Finally, knit two together one more time to go from two stitches to one.
Some patterns use a different decrease sequence—for example, k2tog, k1, k2tog—which also brings five stitches down to one. Follow your pattern's instructions. The goal is to end with a single stitch that you can rejoin to your main fabric.
Rejoining the bobble to your main fabric
Once you've decreased the bobble to one stitch, you have a single stitch on your right needle and your main fabric stitches waiting on a holder or spare needle. Slip the main fabric stitches back onto your left needle. You're now ready to continue knitting as normal.
The bobble stitch becomes part of your next row. If you were knitting in stockinette stitch before the bobble, you'll continue in stockinette stitch after it. The bobble sits on top of the fabric like a small ball, and your knitting flows around it seamlessly.
If you're placing multiple bobbles in a pattern, mark their positions on your fabric with stitch markers or a pencil on your pattern. This prevents you from accidentally placing them too close together or forgetting where they go. Many bobble patterns space them evenly across a row or scatter them randomly for texture.
Common bobble mistakes and how to avoid them
The most frequent mistake is dropping stitches while the bobble is in progress. If you don't find your main fabric stitches on a holder or spare needle, they can slip off and unravel. Always move them to safety before you start working the bobble rows.
Another common issue is inconsistent bobble size. If you vary the number of rows you knit or the tightness of your tension, some bobbles will look larger or smaller than others. Write down the exact number of rows and the decrease sequence, then follow it exactly for every bobble in your project.
Bobbles can also look lumpy or uneven if your increases are too loose or your decreases are too tight. Practice on a swatch first. Knit a few bobbles on a small piece of stockinette stitch, then frog them and try again. By the time you add bobbles to a real project, the motion will feel natural.
Frequently Asked Questions
Can I make bobbles in any yarn weight?
Yes, but the bobble size changes with the yarn. Bobbles in fingering weight yarn will be tiny and delicate; bobbles in bulky yarn will be large and prominent. Adjust the number of stitches you increase into and the number of rows you work to get the bobble size you want. Test on a swatch first.
What if I drop a stitch while working the bobble?
If you drop a stitch on the bobble itself, pick it up with a crochet hook and work it back up to the row you're on. If you drop a stitch on your main fabric while the bobble is in progress, find it when ready with a stitch marker or crochet hook so it doesn't unravel further. You can fix it after you finish the bobble.
Do bobbles work on textured stitches like ribbing or cables?
Bobbles show up best on smooth, flat backgrounds like stockinette stitch. On textured stitches, they can disappear into the texture or look crowded. If your pattern calls for bobbles on a textured background, trust the pattern—the designer tested it. Otherwise, place bobbles on stockinette sections for maximum visual impact.
How do I fix a bobble that looks too loose or too tight?
If the bobble is already attached, you can't easily fix it without frogging back. Prevention is easier: practice on a swatch, keep your tension consistent, and follow the exact increase and decrease sequence your pattern specifies. If a bobble looks wrong after you've finished, you can carefully cut it out and pick up the stitches to redo it, but this takes patience.
Can I use bobbles on both sides of a garment?
Yes, but bobbles on the wrong side can catch on things or feel bumpy against skin. Most patterns place bobbles only on the right side (the side that shows). If you want texture on both sides, consider a different stitch pattern instead.