Found a cheap alternative to put ur rat nav in,saw a fishing reel bag at the local discount store 4quid,padded inside and a handle,sat nav and all the gubbins fits a treat.if u type in fishing reel bag on ebay there is loads on,about 6quid on there,green in colour if anyones interested!
I put my sat nav in a Iveco, can’t get cheaper than that.
I use a padded pencil case from wilkos 2quid plenty of room for 7 inch say nav