I recently became the proud mother of a baby hedgehog. Wanting to spoil him something awful, I decided that he needed the nicest, coziest snuggle bag in existence. I knew that if I just made a regular ol' bag, the visible seams and thread could get tangled on his feet and injure him, so I decided to make a fleece reversible bag with completely hidden seams, so he can have all the fun with none of the hurt! Here is how it is done:

What you'll need:
Fleece-about 4 12"x12" squares, at most. (depending on the size you want, of course)
Scissors
Sewing machine (just to make your life easier)

Step 1: Cut Material

First cut your material.

You will need to cut 4 pieces of fleece; two of each color/pattern.

For this instructable I cut mine into 10x12" rectangles, but any size should work.

Step 2: Sew the Edges

Next, face the similar colors together, and sew around the edges, leaving one open edge.

Step 3: Put Them Together

Put one bag inside the other bag, right sides facing each other.
(In other words, the bag on the outside will be inside out, and the bag on the inside will be rightside out)

Step 4: Sew Em' Up

Sew all the way around the edges, leaving about a 2 or 3 inch gap for turning the fabric.

Step 5: Finishing Up

Turn the fabric rightside out through the hole.
Push one bag inside the other.
Sew all the way around the edge of the bag to close up the hole that was left for turning. You may not be able to go over the corners because of bulkiness. This is ok, just make sure to back-stitch those spots. This is also the only place on the bag that thread will be exposed :)

This bag is reversible, so you can use whichever side you want. It is also washable, so any accidents your hedgie may have won't be a problem.

Then just let your little guy enjoy!