Firefly is about special needs family participation, helping more children take part in special family moments. The Firefly range of products is inspired by 'special needs family participation'. That simply means they are practical, fun products that help children with special needs take part in daily family life.


For children with motor impairments, the Upsee opens an unexplored world. Some have been able to stand and hug their little brother or sister for the first time.

Some have waved at neighbours on their first ever walk along their street. And some crossed the playground hand-in-hand with their best friend for the very first time.

Upsee Size Guide




Size X Small Small Medium Large
1-2 years 2-4 years 4-6 years 6-8 years

Shoulders to Hip 11"-13.5" 12"-14" 14"-15.5" 15"-16.5"
28-32cm 31-36cm 35-39cm 38-42cm

Chest Circumference 19"-22" 20"-24" 22"-26" 25"-28"
50-57cm 52-60cm 57-65cm 63-71cm

Lower Hip Circumference 19"-22" 20"-24" 23"-26" 25"-29"
50-57cm 52-60cm 58-67cm 64-73cm

Maximum User Weight 15Kg 15Kg 20Kg 25Kg
33lbs 33lbs 44lbs 55lbs

Adult Belt (One Size) to fit hip 24" – 42" (60cm–107cm)

Shoe Size UK USA Europe JP/CN
Infant Sandal 3 – 7 3.5 – 7.5 19 – 24 11.5 – 15
Standard Child Sandal 5 – 13 5.5 – 13 22 – 32 13.5 – 20
Adult 3 – 11 4 – 12 36 – 46 23 – 29.5