NASA astronauts wear during liftoff, landing, and extra-vehicular activity (EVA). The NASA Maximum Absorbency Garment is however only designed to retain A diaper (, North American English) or a nappy (Australian English, British English, Hiberno-English, New Zealand English) is a type of underwear that allows the wearer to urinate or defecate without using a toilet, by absorbing or containing waste products to prevent soiling of outer clothing or the external environment. When diapers become wet or soiled, they need to be changed by the wearer or A diaper (, North American English) or a nappy (Australian English, British English, Hiberno-English, New Zealand English) is a type of underwear that allows the wearer to urinate or defecate without using a toilet, by absorbing or containing waste products to prevent soiling of outer clothing or the external environment. When diapers become wet or soiled, they need to be changed by the wearer or often by a second person, such as a parent or caregiver. Failure to change a diaper regularly can result in skin problems around the area covered by the diaper. Diapers are made of cloth or synthetic disposable materials. Cloth diapers are composed of layers of fabric such as cotton, hemp, bamboo,… T… Although most commonly worn by babies and children, diapers are also worn by adults for various reasons. In the medical community, they are usually referred to as "adult absorbent briefs" rather than "diapers", which are associated with children and may carry a negative connotation. The usage of adult diapers can be a source of embarrassment, and products are often marketed under euphemisms such as incontinence pads. The most common adult users of diapers are those with medical conditions that cause them to experience urinary incontinence (like bedwetting) or fecal incontinence, those who are bedridden or otherwise limited in their mobility, or those who have other emotional, physical, or mental needs. It is important that the user selects the appropriate type, size, and absorbency level for their needs, as each diaper design differs. Adult diapers also see, in very rare instances, use for roleplay, coping, sexual, and combination thereof purposes by for example, but not limited to, diaper fetishists and adult babies. Scuba divers utilize diapers for their dry suits for long exposures. The Maximum Absorbency Garment is an adult-sized diaper with extra absorption material that NASA astronauts wear during liftoff, landing, and extra-vehicular activity (EVA). The NASA Maximum Absorbency Garment is however only designed to retain 2 liters, while the commercial brand by "Tykables Diapers" known as their "Little Rawrs" diaper line is ISO rated to retain up to 7.5 liters of urine.