For those of you who have never heard of Super-Fan Builds, they are a team of people who previously worked in the film industry making props. Now, they run a youtube channel, making unique merchandise artwork for 'superfans'.
Previously they have created things like a 'Lord of the Rings' inspired cat litter box and scratching post, a 'Guardians of the Galaxy' swing set, and a 'Bioshock' inspired fish tank.
Their most recent creation is a super-cool stroller for Batman superfan Josh Earl and his son Colin. The pushchair is totally custom made, down to the chassis, with exception of the seat, for which they have used an Evenflo Car Seat with a 5 point harness.
The tumbler frame (or chassis) is made from 1.5 inch square steel. The body the made of a PVC foam sheeting which is lightweight and durable.