diff --git a/src/go.mod b/src/go.mod
index a772e528c..84fc6358c 100644
--- a/src/go.mod
+++ b/src/go.mod
@@ -67,6 +67,7 @@ require (
 	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.7.0 // indirect
 	github.com/Azure/azure-sdk-for-go/sdk/internal v1.3.0 // indirect
 	github.com/AzureAD/microsoft-authentication-library-for-go v1.1.0 // indirect
+	github.com/DmitriyVTitov/size v1.5.0
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/bmizerany/assert v0.0.0-20160611221934-b7ed37b82869 // indirect
 	github.com/cespare/xxhash/v2 v2.2.0 // indirect
diff --git a/src/go.sum b/src/go.sum
index 6d7b244bf..2dd426795 100644
--- a/src/go.sum
+++ b/src/go.sum
@@ -48,6 +48,8 @@ github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
 github.com/DATA-DOG/go-sqlmock v1.4.1 h1:ThlnYciV1iM/V0OSF/dtkqWb6xo5qITT1TJBG1MRDJM=
 github.com/DataDog/datadog-go v3.2.0+incompatible/go.mod h1:LButxg5PwREeZtORoXG3tL4fMGNddJ+vMq1mwgfaqoQ=
+github.com/DmitriyVTitov/size v1.5.0 h1:/PzqxYrOyOUX1BXj6J9OuVRVGe+66VL4D9FlUaW515g=
+github.com/DmitriyVTitov/size v1.5.0/go.mod h1:le6rNI4CoLQV1b9gzp1+3d7hMAD/uu2QcJ+aYbNgiU0=
 github.com/GehirnInc/crypt v0.0.0-20230320061759-8cc1b52080c5 h1:IEjq88XO4PuBDcvmjQJcQGg+w+UaafSy8G5Kcb5tBhI=
 github.com/VividCortex/ewma v1.2.0 h1:f58SaIzcDXrSy3kWaHNvuJgJ3Nmz59Zji6XoJR/q1ow=
 github.com/VividCortex/ewma v1.2.0/go.mod h1:nz4BbCtbLyFDeC9SUHbtcT5644juEuWfUAUnGx7j5l4=
@@ -141,6 +143,7 @@ github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfU
 github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
 github.com/golang/groupcache v0.0.0-20191227052852-215e87163ea7/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
 github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
+github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
 github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
 github.com/golang/mock v1.2.0/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
 github.com/golang/mock v1.3.1/go.mod h1:sBzyDLLjw3U8JLTeZvSv8jJB+tU5PVekmnlKIyFUx0Y=
diff --git a/src/internal/m365/collection/drive/collections.go b/src/internal/m365/collection/drive/collections.go
index a2161f779..44aa0ee26 100644
--- a/src/internal/m365/collection/drive/collections.go
+++ b/src/internal/m365/collection/drive/collections.go
@@ -8,9 +8,11 @@ import (
 	"strings"
 
 	"github.com/alcionai/clues"
+	"github.com/microsoft/kiota-abstractions-go/store"
 	"github.com/microsoftgraph/msgraph-sdk-go/models"
 	"golang.org/x/exp/maps"
 
+	sizePkg "github.com/DmitriyVTitov/size"
 	"github.com/alcionai/corso/src/internal/common/prefixmatcher"
 	"github.com/alcionai/corso/src/internal/common/ptr"
 	"github.com/alcionai/corso/src/internal/data"
@@ -691,6 +693,12 @@ func (c *Collections) UpdateCollections(
 			break
 		}
 
+		driveItem := item.(*models.DriveItem)
+		// Get backing store
+		st := driveItem.GetBackingStore().(*store.InMemoryBackingStore)
+
+		logger.Ctx(ctx).Infow("serialized size", "in_mem_store_size", sizePkg.Of(st.Store))
+
 		var (
 			itemID   = ptr.Val(item.GetId())
 			itemName = ptr.Val(item.GetName())