Inclusion Criteria:  From 18 to 70 years old Chronic or subacute spinal cord injury. Currently in treatment as in-patient or ambulatory in the investigational site. From AIS A to AIS D with enough arm strength to withstand the bodyweight in a walking frame. Previous experience walking with KAFO orthoses (must tolerate standing). Ability to give informed consent  Exclusion Criteria:  WISCI II >16 without the exoskeleton. 5 or more fragility fracture risk factors according to Craven et al. History of fragility fractures of lower limbs in the past 2 years. Deterioration > 3 points of the total International Standards for Neurological Classification of Spinal Cord Injury (ISNCSCI) motor score within the last 4 weeks. Spinal instability Modified Ashworth scale (MAS) > 3 in lower limbs Unable to tolerate 30 minutes standing without clinical symptoms of orthostatic hypotension. Unable to walk 5 meters with KAFO orthoses and the support of a walking frame with wheels. Psychological or cognitive issues that do not allow a participant to follow the study procedures. Any neurological condition other than SCI Medically unstable Severe comorbidities including any condition that a physician considers to not be appropriate to complete participation in the study. Ongoing skin issues Height, width, weight or other anatomical constraints (such as leg length differences) incompatible with the device Insufficient Range of Motion (ROM) for ABLE Exoskeleton device Known pregnancy or breastfeeding