A charity worker has told ITV News how she has witnessed Welsh children turning up to receive free food "with no shoes on".
It comes as new data shows people in Wales have the lowest average earnings in the UK - at £408 a week.
Rachel Carter from StreetGames - an anti poverty charity said, "Up in our Blaenau Gwent some young people came to our provision and they had no shoes on, they were dirty, they hadn't eaten. They eat a pack of Doritos to last them a day"
"There's one in three children in Wales living in poverty - I don't know why that's happening - there's something that's not right obviously".
Watch the report by Rob Osborne:
- What is "relative poverty?"
- Relative poverty means a household earns less than 60% of the UK median income.
The data, by the Department for Work & Pensions, also show a continuing rise of in-work poverty. More than half of children living in deprivation are living in households where at least one adult is employed.
Projects like Fit and Fed helps to combat 'holiday hunger' in some of the most deprived communities in Wales.
Part of the project's focus is to get children active during the school holidays.
The Welsh Government said it is taking "practical steps" to help tackle poverty.