While evading problem such as decrease of water absorption performance and adverse effect to the human body, offer of the water absortion power goods which can hold down the generation of the malodor by the urine. The belt being irradiated below 10kGy, the water absortion power goods which are sterilized.吸水性能の低下や人体への悪影響等の問題を回避しつつ、尿による悪臭の発生を抑えることが出来る吸水性物品の提供。γ線が10kGy以下で照射されて殺菌されている吸水性物品。