The size of the jacket section and overall length are similar to other leading baby sleeping bags, but the Black Robin sleeping bag provides much more space in the hip and leg areas compared with conventional bags. This extra space comfortably accommodates lower limb orthopaedic devices, such as Ponseti clubfoot braces, hip spicas, Pavlic harnesses, Ilizarov frames and Ankle Foot Orthosis (AFOs).

See Specification for more details.