Disposable diapers are the third largest consumer item in landfills, and represent 30% of non-biodegradable waste. The average baby goes through 6 to 8 diapers a day, which represents 6500 to 10000 diapers over the course of two years. In answer to this problem, Luisa Kahlfeldt designed Sumo, a sustainable, reusable diaper entirely made from a fabric called SeaCell, which is essentially seaweed and eucalyptus. It is antibacterial, sustainable to harvest and produce and, since it is mono-material, it is easier to recycle.