The clothing range will be sold exclusively online and is in response to a customer request from a special needs Grandparent.
It is believed that this is the first 'mainstream' retailer to launch a clothing range meeting the needs of disabled children.
Marks and Spencer spokesperson commented, 'We have extended the age range of our bodysuits and sleepsuits up to the age of 7-8 years.
The full range includes 16 styles in white, pink and blue colourways - including a bodysuit that has been adapted for feeding tubes.'
The UK retailer, worked with disability charity Scope to develop the range of clothing for kids with special needs.
The collection is 100% cotton and prices start at £3 for a sleeveless bodysuit and £7 for a sleepsuit.
Within hours of pre-launching a limited selection of the range range, it had already sold out or was indicating low stock.
The full launch of the range is available now.
This is a clear reflection of the need for the range and the lack of affordable alternatives for parents of children with special needs.
The Marks & Spencer long sleeve vest retails at £4 per vest in comparison to £15 per vest sold by Rackety's.
If you did manage to get your hands on some, we'd love to hear your thoughts - please get in touch!