We suggest focusing on your child’s height first, then using age and clothing size as a guide:
Kids: Up to 4'8" (≈142 cm) in height.
Approx. ages 6–9, wearing UK size 7–9.
Tween: Up to 4'10" (≈147–148 cm) in height.
Approx. ages 9–12, wearing UK size 10–12.
If your child is between sizes or nearing the upper limit in height or clothing size, we recommend choosing the larger option (Tween or even Adult S) for extra comfort and room to grow. Our Sleep Pods have a slight stretch, but sizing up ensures a more relaxed fit.
Note: These ages and clothing sizes are approximate, as children can vary greatly in growth and build.