The purple bag is about 8 inches wide by 9 inches tall. That black stripe is actually the zipper. The zipper was 100 inches long, I think. The zipper gives it lots of body, and is so much fun to zip and unzip!

The green one was made with wider ribbon and a shorter zipper - just 36 inches. The bag is actually as wide at the top, as it is at the bottom. We just haven't figured out the formula to have the zipper end up directly under where it started.
This fun ribbon came from Walmart. But you have to go to a sewing store to get the long, long zippers!

Those are sensational! Well done.
Hugs, Lidia

These are great. You have done well with them both. Shirley

Great job Jan, they look wonderful. Love Chris

here you can find instructions for several models
http://www.craftpassion.com/2011/08/zip-it-up-pencil-case-tutorial.html
Hugs Bela

Great bags Hugs Joyce

They look great fun!

If made in a spiral I do not think they will lay flat. Very cool project. Live Laugh Download Stitch!

Very interesting and look great

I love these bags i made for my granddaughter she use it allot .Mary Mulari,s has a book calL,
ZIP @ CARRY BAGS

Very nice. I have not seen these before. Way cool.

Very interesting, these look great and you did great photo displaying the opened bags here. I have a fabric strip cutter and wondering could one of those be used in place of the ribbon? Of course ribbon is all ready set to go.

How clever! Great minds can work wonders! You two sure did...I am not certain I could do this evenif I had a team to help! You are so clever! Hugs!

My sister told me about a bag that was a long zipper. Thanks for showing me what it looks like.I love the purple.

Really like your bags. Thanks for all the info on them.

Interesting. I haven't seen these before. You did a great job making these. Thanks for the instructions.

Wish I had kept all those long zips I had - there were heaps of them. Might go and check my arts recycling store.