Think of PLA plus (+) as a stronger version of PLA filament that is easier to print than ABS.
Overture PLA Plus (PLA+) Filament 1.75mm PLA Professional Toughness Enhanced PLA Roll, Cardboard Spool, Premium PLA 1kg(2.2lbs), Dimensional
SUNLU PLA Plus (PLA+) 3D Printer Filament 1.75 mm PLA Filament Dimensional Accuracy +/- 0.02 mm 2 kg Spool PLA+White 、Yellow 1.75-PLA-White-Yellow
eSUN PLA+ PLA PLUS PLA Pro Filament 1.75mm 1KG Multi-color For FDM 3D Printer
YOUSU Black PLA Plus (PLA+) Filament 1.75 mm 3D Printer Filament Large Spool PLA Filament for 3D Printer & 3D Pen, 3kg (6.6 lbs)
VOXELPLA PLA Plus Gold Filament - $16.99 1.75mm for FDM 3D Printer
ELEGOO PLA+ 3D Printer Filament 1.75mm Colored 1KG – ELEGOO Official
DURAMIC 3D PLA Plus Filament 1.75mm 1 KG, 1.75 PLA Pro 3D Printer Fila – Duramic 3D
DURAMIC 3D PLA Plus Filament 1.75mm 1 KG, 1.75 PLA Pro 3D Printer Fila – Duramic 3D
Overture PLA Plus (PLA+) Filament 1.75mm PLA Professional Toughness Enhanced PLA Roll, Cardboard Spool, Premium PLA 1kg(2.2lbs), Dimensional
CC3D 3D Printer PLA filament Material:PLA(By strengthening treatment) Color:Ocean Blue Diameter (Tolerance): 1.75 mm ±0.04 mm Net Weight: 1000g
PLA MAX Blue PLA Filament 1.75mm 3D Printer Filament 1KG 2.2lbs 3D Printing Materials PLA Plus Pro(PLA+) Strength Than Normal PLA Filament CC3D