trampolines
Springfree Trampoline: Keith Alexander & Steve Holmes (2019)
In the late 1980s, a New Zealand engineer named Keith Alexander wanted to buy a trampoline for his kids. After his wife said they were too dangerous, Keith set …
Springfree Trampoline: Keith Alexander & Steve Holmes
In the late 1980s, a New Zealand engineer named Keith Alexander wanted to buy a trampoline for his kids. After his wife said trampolines were too dangerous, Kei…






