this knitted innertube case will really protect your telephone or i-pad, 'cause is really thick and gummy.
Step 1: WHAT YOU NEED
-1 bicycle innertube;
-piece of fleece.
Step 2: KNIT INNERTUBE
knit the innertube (look at my instructable"knitting with innertube).
you should make a square piece of the mesurement of your telephone or i-pad.
I suggest to make the innertube thread really thin (2/3mm)'cause if not your case will become way too heavy and thick.
Step 3: CUT FABRIC
cut the piece of fabric one centimeter bigger than the edges of the inner tube piece you made.
i used fleece cause is elastic, soft and the edges want unthread
Step 4: SEW FLEECE TO INNERTUBE
fold the edges of the fabric of one centimeter and sew to your piece of innertube
Step 5: PLACE THE ZIPPER
fold in half your piece and sew the zipper (on the top and half way on the side, like in photo)
Step 6: CLOSE EDGES
close the rest of the edges, the left half of the side and the bottoms.