Petit Pli is a children’s clothing line designed by Ryan Mario Yasin, recently graduated from the Royal College of Art and Imperial College London, which has a pleat system that allows the garments to ‘grow’ with children. Thanks to this technology, a single garment can be used from 4 to 36 months of age (3 years old), covering an equivalent of 7 sizes.

Petit Pli assumes that babies are ‘extreme athletes’, so their garments are designed to allow the little ones to play and explore the world, without restricting their movements, and regardless of the weather. The clothing line includes technical clothing such as waterproof and windproof jackets and trousers which, in addition to being ultra light and easy to pack, can be machine washed (30°C).

Petit Pli was launched to address the dull and ill-fitting children’s clothes on the market; particularly for Ronja & Viggo, the founder’s niece and nephew. The turning point came when Ryan had finally found a garment he liked for Viggo, but by the time he travelled to Denmark to gift it, it had already been outgrown.

A single garment can be used from 4 to 36 months of age (3 years old). © Petit Pli

Trained as an aeronautical engineer, and specialising in deployable structures, Ryan decided that he would find the solution not only to ill- fitting children’s clothes but also as a way to help reduce the waste in fashion and garments industry.

So he came up with a pleated solution. “The fabric is folded permanently in such a way that it unfolds long and wide when pulled. In engineering, this property is known as a Poisson negative coefficient”, Ryan explains. Which is exactly the opposite to what happens with conventional fabrics that “thin in one direction when drawn in the other”.

The material used for these garments is a blend of synthetic fibres, which allows the folds to be permanent and the garments to be machine washed, with cold water. It also makes up very light, waterproof and windproof clothing items.

Pleats detail. © Petit Pli

The clothing is designed for a continuous fit so that parents do not need to buy six or seven different garments to cover each size. This means less environmental impact, as it reduces the use of materials, labour, transport and waste. And the best part is that the clothes are not restrictive. The structure deforms with the movement of the child expanding and contracting in synchrony with its movement.

At the moment the patent of the technology is still pending and the company is raising capital to be able to take Petit Pli to the market soon. The plan is to start producing in the UK and then expand it internationally making sure to work with factories with high ethical standards. Additionally, they are working on a wide range of designs, for different tastes and needs.


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