Sling offers the ability to replay content that has aired in the past three days on select channels. To tell if the channel you're watching offers the Lookback feature, check the Schedule ribbon. If you see a tile to the left of what's currently on now, the channel offers Replay.
To access Replay content, start by selecting a channel using the Channels view of the Guide
Scroll down to the Schedule ribbon. All available Replay content remains in the current schedule ribbon, to the left of the content on now.
Scroll, swipe, tap, or press left on the Schedule ribbon to see any previously aired episodes. Lookback content is available as far as three days prior to the current date and time.
To start streaming, select the episode you are interested in viewing, then select Watch.