ACUVUE OASYS 1-DAY offers Class-1 UVA and UVB protection, DAILIES TOTAL1 doesn't. DAILIES TOTAL1 outperforms ACUVUE OASYS 1-DAY on oxygen transmission. While the water content of the two lenses is similar when looking at the lens core, DAILIES TOTAL1's water content increases to 80% at the surface.