Wheelchair for Robbie

Robbie is a fun loving, cheeky boy who loves to be outside with his dogs. He has a very rare condition called Arthrogryposis which has meant that he can only get about using a wheelchair. Robbie would love to be able to go off-road, splashing through puddles, get muddy and chase around with his friends at school. He would especially love to do donuts in the snow! Unfortunately Robbie's wheelchair is a manual wheelchair and he has to rely on an adult to push him and is only suitable for indoor use and hard surfaces, which he says are "booooring!!!" 
We would love to be able to purchase an off-road, all-terrain wheelchair for him which would give him so much independence. It would also mean that we could go out together as a family into the local forest and go for family walks with the dogs. We're a very 'outdoorsy' family but just can't do things together because of the lack of a suitable wheelchair.  We have seen an ideal wheelchair by Trekinetics that would open up a whole new world for us as a family and boost our mental and physical wellbeing.https://trekinetic.com/?gclid=Cj0KCQjw2or8BRCNARIsAC_ppyakq_gzWHHrJJ3AyczHxN5VDShLHHT178fuTBn2dbckP4BzxkfULXAaAtsDEALw_wcB 
Any help that you could give us, either fundraising or donations, however small would be amazing. Thanks for reading our story!