diff --git a/README.md b/README.md
index d2ee872..6215144 100644
--- a/README.md
+++ b/README.md
@@ -5,6 +5,8 @@
 [![Coverage Status](https://coveralls.io/repos/github/linxGnu/pqueue/badge.svg?branch=master)](https://coveralls.io/github/linxGnu/pqueue?branch=master)
 [![godoc](https://img.shields.io/badge/docs-GoDoc-green.svg)](https://godoc.org/github.com/linxGnu/pqueue)
 
+`pqueue` is thread-safety, serves environments where more durability is required (e.g., outages last longer than memory queues can sustain).
+
 ### Usage
 
 ```go