Update product-limits.md

Author: maleman842

src/unify/product-limits.md

@@ -50,6 +50,8 @@ Visit Segment's [pricing page](https://segment.com/pricing/){:target="_blank"} t
 | Engage Data Ingest                            | 1x the data ingested into Connections         | The amount of data transferred into the Compute Engine.                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
 | Audience Frequency Update                     | 1 per 8 hours                                 | Audiences that require time windows (batch audiences), [funnels](/docs/engage/audiences/#funnel-audiences), [dynamic properties](/docs/engage/audiences/#dynamic-property-references), or [account-level membership](/docs/engage/audiences/#account-level-audiences) are processed on chronological schedules. The default schedule is once every eight hours; however, this can be delayed if the "Batch Compute Concurrency Limit" is reached. Unless otherwise agreed upon, the audiences will compute at the limit set forth. |
 | Event Properties (Computed Traits)            | 10,000                                        | For Computed Traits that exceed this limit, Segment will not persist any new Event Properties and will drop new trait keys and corresponding values.                                                                                                                                                                                                                                                                                                                                                                               |
+| Session Window Minimum Size            | 30 minutes                                           | The minimum size for a session window used with a Computed Traits.                                             |
+| Session Window Maximum Size            | 90 days                                              | The maximum size for a session window used with a Computed Traits.                                             |
 
 
 ## SQL Traits