 This research has developed a new type of flexible and lightweight electromagnetic wave absorbing material using cotton-derived carbon fibers, reduced graphene oxide, and iron oxide nanowires. This hybrid paper is able to absorb microwave energy while maintaining flexibility and lightness. It has a maximum absorption intensity of minus 63 dB and a broadband absorption range of 5.8 GHz, covering the entire coup band. This material could be used for applications such as portable electronic devices and wearables, where it would provide protection against unwanted electromagnetic interference. This article was authored by Yan Cheng, Justin Zhiyao Cao, Wang Qinxiao, and others.