http://www.amazon.co.uk/gp/product/B000GX31F2/ Technical Details:
The Bumbo is made from a soft, lightweight, non-toxic material
It can be used on any flat surface
Durable and easy to clean
The Bumbo supports your baby in comfort in an upright position
There are no uncomfortable straps to worry about
Ideal for babies from around 4 months to a year and beyond!
Bumbos are suitable for children up to 10kg in weight
They also have the playtray for £7.99:
here 
