Standard PLA+, Charcoal Gray, 1.75mmA dark, cool gray in Charcoal Gray Standard PLA+ is perfect for those 3D printing projects where Midnight Black is too dark. Standard PLA+ is a basic, entry level PLA filament. It's available in a broad color selection and uses only virgin NatureWorks Ingeo 4043d PLA resin. No fillers or stretchers means a more predictable 3D printing experience. Because we don't use fillers, the ideal print temp might be 5 10C higher than your current PLA settings.