To suit 70mm solar wheels.
Install the tyres over the rear wheels, much the same as you would a bike tyre, starting at the bottom, and working up. As the wheels are very narrow, it can be fiddly to get the tyres to seat properly.
WARNING: Be careful when installing the tyres, as they are NOT rubber bands and have very little stretch in them – they can easily be broken at the join.
Pack of 5.