In my book Crochet Animal Slippers, there are three different ways to join the gussets. Since this step plays a big role in the final look and fit of your slippers, I created a short video for each method. Right‑ and left‑handed instructions are included (left‑handed crocheters can simply skip to the middle of each video).

Option 1 – FLO Whipstitch
This method uses a simple whipstitch, but it’s important to sew through the front loops only (FLO). Sewing through both loops can twist the gusset and distort the shape.
How to Work FLO Whipstitch:
SET‑UP: Pull the needle through the stitch with Marker A on the slipper and the first stitch of the gusset, inserting under FLO from slipper to gusset.
STEP 1: Pull the needle through the next stitch of the slipper and gusset, again inserting under FLO from slipper to gusset.
Repeat STEP 1 across, ending in the stitch with Marker B on the slipper and the last stitch of the gusset.
This creates a neat, flexible seam with minimal bulk.

Option 2 – Slip Stitch Join
If you prefer a no‑sew method, the slip stitch join is a great alternative. Using the long tail from the gusset, you crochet the two edges together.
How to Work Slip Stitch Join:
SET‑UP: Sl st in the stitch with Marker A on the slipper, inserting the hook under both loops from front to back. Sl st in the first stitch of the gusset, also under both loops.
STEP 1: Sl st in the next stitch of the slipper.
STEP 2: Sl st in the next stitch of the gusset.
Repeat STEP 1 and STEP 2, ending in the stitch with Marker B on the slipper and the last stitch of the gusset.
This creates a sturdy, decorative seam with a clean edge.

Option 3 – Mattress Stitch
Mattress Stitch (also known as Invisible Weaving) creates a smooth, nearly invisible seam. It’s ideal when you want the join to blend seamlessly into the fabric.
How to Work Mattress Stitch:
SET‑UP: Pull the needle through the stitch with Marker A on the slipper, inserting under both loops from back to front. Pull the needle through the first stitch of the gusset, also under both loops from back to front.
STEP 1: Pull the needle through the next stitch of the slipper.
STEP 2: Pull the needle through the next stitch of the gusset.
Repeat STEP 1 and STEP 2, ending in the stitch with Marker B on the slipper and the last stitch of the gusset.
This method produces a beautifully smooth seam that disappears into the work.

Important Note for All Three Methods
Before weaving in your ends, check that the gusset sits straight. If you accidentally skipped or misaligned a stitch, the seam may slant. Simply undo the join and try again... small adjustments make a big difference in the final look.
Where to Find the Full Instructions
Step‑by‑step photos, diagrams, and complete slipper patterns are included in my book Crochet Animal Slippers, available through major bookstores and craft retailers. The book includes three slipper styles:
- Shoes with covered heels
- Boots with ankle cuffs
- Slides (backless slippers)
I hope you enjoy making them as much as I enjoyed designing them.
