|A 24-year-old graduate student has created clothes for infants that
'grow' as the child does, sparing parents from having to buy new
garments every few weeks. Ryan Yasin invented the material while
studying at the Royal College of Art in the UK and is now using it to
launch a clothing range called Petit Pli.
Unlike other elastic materials, it expands in perpendicular directions
when stretched, meaning it can respond to a child’s body shape. Children
tend to go through seven clothing sizes between the ages of six and 36
months, often outgrowing clothes within weeks of them being bought.
Yasin's synthetic fibre uses a pleated structure that allows it to
follow the Negative Poisson’s ratio, a phenomenon in which materials
become fatter when stretched. He is currently talking to manufacturers
about mass-producing the clothes and said they could go on sale within