Human Factor Validation of Pediatric Mobility Device

Inclusion Criteria: Primary users: * Informed consent signed by parents or guardian * Aged 6-36 months * Unable to mobilize independently for exploratory play and peer interaction, as categorized by Hays (1987) * Adequate trunk and head control to remain upright in the device, including regain head control * Adequate hand/ arm (distal) control to reach for objects in front of them Secondary users: * Signed informed consent * Physiotherapist/Occupational Therapist or parent/guardian of the child included in the test Exclusion Criteria: * Primary users: * Weight \>16 kg/35 Ibs * Length \>100 cm/39 In * Children that lack head control in such a severe manner that they cannot regain control if it is lost * Children who do not show awareness of or respond to toys, objects, sounds and/or people in their environment * Any other reason, if in the opinion of the investigator, the individual user is not appropriate, or suitable for participation in the test. Secondary users: * Hearing/vision loss or limited cognitive skills impacting the ability to take instructions and perform the tasks of the test * Ability to understand oral and written English as product labelling will in this Human Factor validation test only be available in English * Any other reason, if in the opinion of the investigator, the individual user is not appropriate, or suitable for participation in the test