Around two centimeters, orange colour.
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I think a higher definition image or more description will be required if we are to get anywhere with this.
This is the only picture I have, was taken by my daughter. The animal was on her shoulder so she was a bit nervous when she took the picture. When I asked her if it was a spider she said it looked more like an octopus...
Thanks for trying
Have another look at the weave of the jumper then we can get a more accurate idea of size from measuring it. The number of legs is going to be a little more difficult.
Lat/Lng: 51.4, -0.6
OS grid ref: TQ0078