Weight limits vary by model. Overall "holds up to" values range from about 55 lb to 220 lb. Some listings give separate capacities for components (for example, a swing may hold up to 88 lb while the slide supports up to 132 lb).
Many listings promote both indoor and outdoor use, stating they work in backyards or playrooms; a few are specified as indoor-only. Descriptions sometimes note portability or lightweight designs to make indoor placement easier.