Some people wonder what Yvhuce Industries means by their Infinisorb line being able to expand to the point of "hindrance of movement" (listed as one of the warnings/disclaimers/advisories on when might be an "appropriate" time for a change). A situation where such diapers can do stuff like this. While technically, an Infisorb never actually "needs" to be changed (due to converting contents into more fluff, and thus being self-cleaning), it's usually advised to change them before reaching this type of size dynamic. Because, even if one is able to get one's self to a more mobile position, one then risks knocking over everything in the vicinity as one goes by (aka "Wrecking Ball Butt").