Step 1: Trace the Pattern
Line up the monofin with the toe area and trace to complete the pattern.
Add 1 inch allowance around the trace line for a child or 2+ inches for an adult.
Step 2: Cut Out the Swim Tail
Step 3: Sew the Swim Tail
Fold down the top and sew a casing for the elastic. Measure the elastic to fit snugly around the waist, insert into the casing, and finish.
Insert the monofin into the swim tail. It's ready for swimming.
Step 4: Safety Tips for Mermaid Style Swimming
Use core muscles to swim like a dolphin. Practice sweeping the tail forward to place the feet on the pool bottom to regain a standing position at any time.
The tail should slide on and off easily. Make the elastic tight enough to stay on, but loose enough to easily slide down to free the legs and feet.
Step 5: Video
Here you'll see my youngest daughter using her mermaid tail with a floating ring. She's older now and more experienced with her tail. However, with responsible supervision, even very young children can have fun being a mermaid.