This section of the supporting online material for the article "Cassini Observes the Active South Pole of Enceladus" includes Figure S1, which presents broadband spectral reflectance data obtained in the GRN (λ=560 nm), UV3 (λ=340 nm), and IR3 (λ=950 nm) images on the tiger stripes and adjacent bright inter-stripes plains materials. Additionally, it shows systematic variations in laboratory spectra of pure water ice particles as a function of particle size.This section of the supporting online material for the article "Cassini Observes the Active South Pole of Enceladus" includes Figure S1, which presents broadband spectral reflectance data obtained in the GRN (λ=560 nm), UV3 (λ=340 nm), and IR3 (λ=950 nm) images on the tiger stripes and adjacent bright inter-stripes plains materials. Additionally, it shows systematic variations in laboratory spectra of pure water ice particles as a function of particle size.