diff --git a/develop-docs/sdk/data-model/envelopes.mdx b/develop-docs/sdk/data-model/envelopes.mdx
index cc7dad913775e..8126eb862ff18 100644
--- a/develop-docs/sdk/data-model/envelopes.mdx
+++ b/develop-docs/sdk/data-model/envelopes.mdx
@@ -348,6 +348,7 @@ These limits are subject to future change and defined currently as:
 - *1MB* for event (errors and transactions), span, log, and metric (statsd, buckets, meta) items.
 - *100KB* for monitor check-in items
 - *50MB* for profile items
+- *2KB* for trace metric items
 - *10MB* for compressed replay item
 - *100MB* for replay item after decompression
 - *100 sessions* per envelope