diff --git a/ontology/saref4wear.ttl b/ontology/saref4wear.ttl
index 2068b60fc4c39f0bcecbef2e475bcdece62a5420..9132fa5e25eb4f868d77680b0ba0cda4d50915c6 100644
--- a/ontology/saref4wear.ttl
+++ b/ontology/saref4wear.ttl
@@ -633,11 +633,6 @@ s4wear:ActuableObject rdf:type owl:Class ;
                       rdfs:label "Actuable object"@en .
 
 
-###  https://saref.etsi.org/saref4wear/Area
-s4wear:Area rdf:type owl:Class ;
-            rdfs:label "Area"@en .
-
-
 ###  https://saref.etsi.org/saref4wear/Biometric
 s4wear:Biometric rdf:type owl:Class ;
                  rdfs:subClassOf s4wear:Information ;
@@ -794,7 +789,8 @@ s4wear:User rdf:type owl:Class ;
 
 ###  https://saref.etsi.org/saref4wear/Wearable
 s4wear:Wearable rdf:type owl:Class ;
-                rdfs:subClassOf saref:Device ;
+                rdfs:subClassOf saref:Device ,
+                                geosp:Feature ;
                 rdfs:comment "A wearable device is a device that is intended to be located near, on or in an organism.
 The definition of this concept satisfies the requirement WEAR-1."@en ;
                 rdfs:label "Wearable device"@en .
@@ -807,7 +803,8 @@ s4wear:WearableComponent rdf:type owl:Class ;
 
 ###  https://saref.etsi.org/saref4wear/Wearer
 s4wear:Wearer rdf:type owl:Class ;
-              rdfs:subClassOf [ owl:intersectionOf ( s4wear:LivingOrganism
+              rdfs:subClassOf geosp:SpatialObject ,
+                              [ owl:intersectionOf ( s4wear:LivingOrganism
                                                      [ rdf:type owl:Restriction ;
                                                        owl:onProperty s4wear:isSensedBy ;
                                                        owl:someValuesFrom s4wear:Wearable