diff --git a/README.cloud b/README.cloud
index 43996b27fc..f46dd01902 100644
--- a/README.cloud
+++ b/README.cloud
@@ -38,6 +38,19 @@ openstack is smart enough to just return the current ip of that instance
 and go on. This way you can re-run if you want to reconfigure it without
 reprovisioning it.
 
+
+Sizes options
+-------------
+
+Name        Memory_MB  Disk   VCPUs
+m1.tiny     512        0      1
+m1.small    2048       20     1
+m1.medium   4096       40     2
+m1.large    8192       80     4
+m1.xlarge   16384      160    8
+m1.builder  5120       50     3
+
+
 === Persistent cloud instances ===
 
 Persistent cloud instances are ones that we want to always have up and