Caleb and Lennon, aged nine, and Imogen, eight, were chosen for the Big Hero 3 campaign. Named the "Hero Arm", it is the world's first multi-grip bionic arm for children.

Three children are raising £20,000 to fund bionic arms for Christmas .

Caleb and Lennon, both nine, and eight-year-old Imogen, all born with one arm each, were picked for the Big Hero 3 campaign - which aims to raise the money to give a bionic arm to each child.

The bionic arm , named the "Hero Arm", is the world's first multi-grip bionic arm for children. The campaign has already raised more than £2,000, but needs help to reach the £20,000 target by mid-November - so the children can receive their bionic arm s in time for Christmas day.

Caleb's mum, Sammi Hughes, who is training to be a paramedic, said: "Caleb

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