Some people seem to have a problem with sweat, or at least sweat stains on their clothing.
Today’s invention relieves these delicate flowers of their embarrassment.
Users would wear a pale shirt during eg exercise. This would reveal a map of their personal sweat distribution.
Their next T-shirts could then be constructed with patches of material in these zones pre-coloured so that, when wet, they became indistinguishable from the rest of the material (eg a dark grey shirt would have lighter grey patches built in).
