![](http://farm2.static.flickr.com/1206/618120166_03c50b8e79.jpg?v=0)
You will need: at least one flip flip that fits your foot, some vinyl, cotton fabric for the top of the slippers (call it your main fabric), muslin or something that kind of matches your main fabric (this fabric is not meant to be seen but you might get a little bit peeking out of the edge of your slippers so pick something that will be camouflaged), bias tape 1/2 inch wide or fabric to make your own bias tape, for the straps and batting (I used polyester because it is fluffier and it will hold up better under my feet).
Also handy: disappearing fabric marker, bias tape maker (if you're going to make your own) and a walking foot for your machine. You don't have to use one but I did. Now that i have one I find myself using it more often than not. It's awesome.
1. On the back side of your vinyl, plop down your stinky old flip flop and trace the sole using a disappearing marker.
![](http://farm2.static.flickr.com/1423/618112322_c2da859a26.jpg?v=0)
2. Use one of your vinyl soles as a template and lay it over your main fabric and your muslin, each folded in half, right sides together. Trace around the soul, about 1/2 in away from the edge of the vinyl. This does not have to be perfect. If you're scared, give yourself more than 1/2 of an inch. Now pin it all together and cut on the line.
![](http://farm2.static.flickr.com/1277/617558143_3c024a57d1.jpg?v=0)
3. Layer your pieces as so: two pieces of batting on the bottom, muslin in the middle and main fabric, right side down, on top. Be sure you've got right and left foot accounted for. Pin it all together (I didn't...I'm sorry, I'm reckless).
![](http://farm2.static.flickr.com/1180/618115032_04ce4ddf19.jpg?v=0)
4. Now take one of your vinyl soles and center it over one of the little stacks that you just made. Trace around the exact edge or the vinyl, then put the vinyl aside. This is your sewing line. Sew along that line, around the entire perimeter of the stack, leaving a two to three inch opening on one side for turning.
![](http://farm2.static.flickr.com/1007/617561723_96dedfecb3.jpg?v=0)
5. Trim the seam allowance to 1/4 of an inch on both slippers.
![](http://farm2.static.flickr.com/1266/618116958_a6353ab9e8.jpg?v=0)
5. For the strap, I made my own not-on-the-bias tape (it doesn't need to be cut on the bias for this). I cut a two inch wide strip of fabric,
![](http://farm2.static.flickr.com/1434/618113786_28d9efd739.jpg?v=0)
![](http://farm2.static.flickr.com/1377/617559851_dc51f78348.jpg?v=0)
Next, sew along the open edge of your tape like so:
![](http://farm2.static.flickr.com/1138/618117844_164eec90c6.jpg?v=0)
6. Put your turned out insoles on the floor and center your feet over each one. With your disappearing marker, make a mark in between your first and second toes on each insole. This is where you are going to sew down the center of your strap.
Cut a 12 inch piece of the strap. Pin the strap to the insole where you marked between your toes. The strap should be perpendicular to the insole (like a cross) and there should be five inches of strap pointing towards the inside (where your big toe is) and seven inches of strap on the other side. Sew over the strap at the between your toes mark, back stitching several times.
![](http://farm2.static.flickr.com/1063/618118410_48094cde50.jpg?v=0)
7. Put the slipper back on the floor and put your foot back on it, this time with the straps coming up from between your big and second toes. You want to mark where the straps will be sewn on the edge of the slipper so pull them over your toes to fit your feet. They should be tight enough to stay on but loose enough that they are easy to slip on. Make a diagonal mark on the straps, where they meet the side seams and mark the side of the slipper, on either side of the straps. Take your foot out and pin the straps in place, lining up the marks and wrapping the excess strap under the insole.
![](http://farm2.static.flickr.com/1332/617565001_e5d01f21aa.jpg?v=0)
8. Lay the insoles on the vinyl soles, wrong sides together and edge stitch all of the way around the slipper, over the straps and closing the opening you left for turning. If necessary, trim the vinyl to match the insole.
Done! Now get comfy and stay cool!
![](http://farm2.static.flickr.com/1357/617566777_2e34b13354.jpg?v=0)