diff --git a/droplets_test.go b/droplets_test.go
index 3bbef9e4..464b9bd6 100644
--- a/droplets_test.go
+++ b/droplets_test.go
@@ -363,7 +363,7 @@ func TestDroplet_String(t *testing.T) {
 	}
 
 	stringified := droplet.String()
-	expected := `godo.Droplet{ID:1, Name:"droplet", Memory:123, Vcpus:456, Disk:789, Region:godo.Region{Slug:"region", Name:"Region", Sizes:["1" "2"], Available:true}, Image:godo.Image{ID:1, Name:"Image", Type:"snapshot", Distribution:"Ubuntu", Slug:"image", Public:true, Regions:["one" "two"], MinDiskSize:20}, Size:godo.Size{Slug:"size", Memory:0, Vcpus:0, Disk:0, PriceMonthly:123, PriceHourly:456, Regions:["1" "2"]}, BackupIDs:[1], SnapshotIDs:[1], Locked:false, Status:"active", Networks:godo.Networks{V4:[godo.NetworkV4{IPAddress:"192.168.1.2", Netmask:"255.255.255.0", Gateway:"192.168.1.1", Type:""}]}, ActionIDs:[1], Created:""}`
+	expected := `godo.Droplet{ID:1, Name:"droplet", Memory:123, Vcpus:456, Disk:789, Region:godo.Region{Slug:"region", Name:"Region", Sizes:["1" "2"], Available:true}, Image:godo.Image{ID:1, Name:"Image", Type:"snapshot", Distribution:"Ubuntu", Slug:"image", Public:true, Regions:["one" "two"], MinDiskSize:20}, Size:godo.Size{Slug:"size", Memory:0, Vcpus:0, Disk:0, PriceMonthly:123, PriceHourly:456, Regions:["1" "2"], Available:false, Transfer:0}, BackupIDs:[1], SnapshotIDs:[1], Locked:false, Status:"active", Networks:godo.Networks{V4:[godo.NetworkV4{IPAddress:"192.168.1.2", Netmask:"255.255.255.0", Gateway:"192.168.1.1", Type:""}]}, ActionIDs:[1], Created:""}`
 	if expected != stringified {
 		t.Errorf("Droplet.String returned %+v, expected %+v", stringified, expected)
 	}
diff --git a/sizes.go b/sizes.go
index d9bbd7d6..56812e26 100644
--- a/sizes.go
+++ b/sizes.go
@@ -24,6 +24,8 @@ type Size struct {
 	PriceMonthly float64  `json:"price_monthly,omitempty"`
 	PriceHourly  float64  `json:"price_hourly,omitempty"`
 	Regions      []string `json:"regions,omitempty"`
+	Available    bool     `json:"available,omitempty"`
+	Transfer     float64  `json:"transfer,omitempty"`
 }
 
 func (s Size) String() string {
diff --git a/sizes_test.go b/sizes_test.go
index 55312bf9..390ddf4d 100644
--- a/sizes_test.go
+++ b/sizes_test.go
@@ -84,10 +84,12 @@ func TestSize_String(t *testing.T) {
 		PriceMonthly: 123,
 		PriceHourly:  456,
 		Regions:      []string{"1", "2"},
+		Available:    true,
+		Transfer:     789,
 	}
 
 	stringified := size.String()
-	expected := `godo.Size{Slug:"slize", Memory:123, Vcpus:456, Disk:789, PriceMonthly:123, PriceHourly:456, Regions:["1" "2"]}`
+	expected := `godo.Size{Slug:"slize", Memory:123, Vcpus:456, Disk:789, PriceMonthly:123, PriceHourly:456, Regions:["1" "2"], Available:true, Transfer:789}`
 	if expected != stringified {
 		t.Errorf("Size.String returned %+v, expected %+v", stringified, expected)
 	}