1. 3Pcs Set Kids Girls Mermaid Tail Swimming Bikini Set Swimwear Mono Fin Swim Set (120(6~8Years),Pink Top+Panties+Light Blue Mermaid Tail+Monofin) (Click Link to Check Price on Amazon)
Editor's Rating : 9.3 out of 10
Package Included: 3pcs set or 3pcs set with Monofin (Depend on your selection)The 1pc Mermaid Tails sew on the bottom(it can put the monofin inside smoothly)

2. Sharks Wear 3 Pieces Children Mermaid tail Swimming Costume with Coloring E-Book. X-Large - Kelly Green (Click Link to Check Price on Amazon)
Editor's Rating : 9.7 out of 10
3 PC MERMAID TAIL. Sharks Wear mermaid tail comes not with the tail only, you get a bonus a bikini top and bottom for the same price!BEAUTIFUL DESIGN AND HIGH QUALITY. This Sharks Wear tail was designed by a top designer with 3D scales and was made with high quality and comfortable fabric which will make you look like a real mermaid while it's so comfortable and will last for years.

3. Kids Girl Swimwear Top Panties Mermaid Tail 3Pcs Swimming Costumes with Mono fin (Click Link to Check Price on Amazon)
Editor's Rating : 9.9 out of 10
Kids Girls SwimsuitKids Swimming Mono Fin

4. Sun Tail Mermaid Girls' Aurora Borealis Mermaid Monofin Swim Suit, Pink, X-Large 10/12 (Click Link to Check Price on Amazon)
Editor's Rating : 9.3 out of 10
BEAUTIFUL & COMFORTABLE - Our mermaid tails are soft, breathable swimsuit fabric with 4-way stretch.FUNCTIONALLY SUPERIOR - Our engineered monofins provide superior swimming propulsion and control.

5. Fin Fun Mermaid Tail, Reinforced Tips, Monofin, Tidal Teal, Size Child 10 (Click Link to Check Price on Amazon)
Editor's Rating : 9.6 out of 10
*NEW* REVOLUTIONARY patent-pending Tip Reinforcement Technology PROTECTS the tips of your tail from holes, tearing, & shredding. No need for tip protector tape!The BESTSELLING and HIGHEST REVIEWED swimmable mermaid tails in the world