A V-Part wig is a full wig with only a small, v-shaped parting at the top for your real hair to be exposed. On either side of the parting are clips or grips that can be attached to your hair to secure your wig. To care for your hair under your wig, you can braid your hair or style it into a slick bun, making sure to leave out a section of your hair on top of your head, ideally where your natural parting is, so you can easily blend your hair in.
I think V-Part wigs are great if you're not ready for a real bob haircut just yet. As someone with coily hair, I've repeatedly bought the UNice Kinky Curly Natural V-Part Wig (£70) as the curl pattern blends seamlessly with my own and the installation is quick and easy. Opt for 14 to 16 inches for a curly bob hairstyle without the commitment.