Mermaid Tail Size Guide | Shop by Height
Choose your child's mermaid tail by their overall height in cm, not their age. If their height falls between sizes, choose the larger size, then select the tail design you love.
Choose by overall height, not age. If your child falls between sizes, choose the larger size. The age shown beside each size is only a guide.
Mermaid tail sizes by height
| Tail size | Age shown on many listings | Availability |
|---|---|---|
| 100 cm | 2-3 years | Selected tails only |
| 110 cm | 3-4 years | Available on most styles |
| 120 cm | 5-6 years | Available on most styles |
| 130 cm | 7-8 years | Available on most styles |
| 140 cm | 9-10 years | Available on most styles |
| 150 cm | 10-12 years | Available on most styles |
| 160 cm | 12-14 years / adult small | Selected styles only |
| 170 cm | 14-16 years / adult medium | Selected styles only |
Not every tail has every size, so check the size selector on your chosen design.
Remember the monofin
The monofin gives the tail its shape and is needed for swimming. Our Neoprene Monofin is available in Small for tail sizes 100-130, Large for sizes 130-150, and a Shaped option for selected Deluxe Bubbles and Pom Pom tails in size 130 and above.
Important swimming safety
WARNING: Mermaid tails or monofins can significantly reduce the person's ability to swim, and can only be used by competent swimmers under strict adult supervision at all times, regardless of swimming ability.
Read the full Mermaid Tail Safety Guide
Need more help? Visit our FAQ or Mermaid Tail Safety Guide.
