Twin pack of Rio Green PLA Filament for the entire UP! 3D Printer range.
2 x 500g spools.
PLA is harder than ABS, but is a more brittle. That doesn't mean that it will break easily - it is actually very strong and more likely to snap than bend. It also remains flexible for a short period of time as it cools. Additionally, PLA doesn't warp and lift on larger objects the way ABS can. Each type of polymer is better suited to different kinds of applications.