Mermaid Tail Size Guide | Shop by Height
Choosing a mermaid tail is easier when you start with your child's overall height, not their age. Choose the size closest to your child's height, then select the tail design you love.
Buy the size closest to your child's overall height. 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. If your child's height sits between the options, choose the closest available size and contact us if you are unsure.
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.
