You can buy adjustable bangles.  But did you know you can make your own?  It is much cheaper that way.  This tutorial is by Jessica from Jewelrytutorialhq. I agree with her that memory wire is so much better than using regular wire.  Memory wire is called that because it holds its shape.  This bangle will not get distorted!

Another great reason for making your own memory wire adjustable bangle is you can add small beads if you do not like to leave the wire bare.  This is not possible if you bought ready made adjustable bangles!

Before You Go:
Original Post by THE BEADING GEM
Jewelry Making Tips - Wire JewelryTips  -Jewelry Business Tips