OUISTITI full body harness (Petzl)

Full body harness for children: only the shoulder straps are adjustable
For children who weigh less than 30 kg (66,14 lbs)

One-size-fits-all
Waistbelt between 60 and 101 cm (23,62 and 39,76 in)
Maximum leg loops: 51 cm (20,08 in)
Weight: 350 g (0,77 lbs)