nehoo cold therapy pad for shoulder, attachment for ice therapy machine, including 2 extra female connectors nehoo this universal cold pad can be used on cold therapy machine which equip similar quick connectors. the male connectors are compatible with most female connectors of cold therapy machines. if the connectors are not compatible, users could replace the original female connectors with the extra female connectors provided in the package.</br></br>it is difficult to wrap the pad with one hand, please make sure someone helps.