"予備あるしさ" What does this phrase mean? I was reading the manga and I didn't understand


![enter image description here](https://i.stack.imgur.com/wcIoK.jpg)

If you can help me with this translation.




I think it means, that she has some extra knitting material. And now she is
searching for it in her bag, so that he can try to knit as well. 予備 means
reserve, spare.




I think it means, that she has some extra knitting material. And now she is
searching for it in her bag, so that he can try to knit as well. 予備 means
reserve, spare.

