The SLSTR products (Level-1B and Level-2 measurement, annotation and auxiliary datasets) are generated separately for the two instrument views (nadir and oblique) at a spatial resolution that depends on which channel was used:includes both SWIR and Thermal measurements. This extended radiometric resolution is associated with two different Spatial resolutions.
User Guides - Sentinel-3 SLSTR - Resolutions - Sentinel Online
SENTINEL-3 SLSTR Resolutions
Sentinel-3 SLSTR User Guide key resources