Compared to conventionally packaged beverages in 500ml plastic bottles, this is how you are saving up to 98% on plastic and CO2:
Plastic:1x waterdrop PP sleeve: 0.4 g1x 0.5 L PET bottle: 20 g20 g - 0.4 g = 19.6 g / 20 g = 0.98 = 98%.
CO2:CO2 per liter waterdrop: 0.31 gCO2 per liter PET bottle: 29 g
Formula: 29 g - 0.31 g = 28.69 g / 29 g = 98.9%