diff --git a/go.mod b/go.mod
index 69d834f..4f2a692 100644
--- a/go.mod
+++ b/go.mod
@@ -18,7 +18,7 @@ go 1.26
 
 require (
 	github.com/MichaelMure/go-term-markdown v0.1.4
-	github.com/alecthomas/repr v0.5.2
+	github.com/alecthomas/repr v0.5.3
 	github.com/charmbracelet/bubbles v1.0.0
 	github.com/charmbracelet/bubbletea v1.3.10
 	github.com/charmbracelet/lipgloss v1.1.0
@@ -40,6 +40,7 @@ require (
 )
 
 require (
+	codeberg.org/scip/mapmap v0.0.2 // indirect
 	github.com/MichaelMure/go-term-text v0.3.1 // indirect
 	github.com/alecthomas/chroma v0.7.1 // indirect
 	github.com/aymanbagabas/go-osc52/v2 v2.0.1 // indirect
diff --git a/go.sum b/go.sum
index 5f7026b..c9b40a4 100644
--- a/go.sum
+++ b/go.sum
@@ -1,3 +1,7 @@
+codeberg.org/scip/mapmap v0.0.1 h1:L1jMBo/UNp19MXUF/ONjc1XKVGeuF1x05z0pEhjgkzA=
+codeberg.org/scip/mapmap v0.0.1/go.mod h1:/ojYo2P7dMA2FWEu+jHKmsKPeq5yDcCvXeHevqZd5OI=
+codeberg.org/scip/mapmap v0.0.2 h1:0i61jOUwFmGVwPukrMzrx0Fi4T9Qru2nlmibuaJimBo=
+codeberg.org/scip/mapmap v0.0.2/go.mod h1:/ojYo2P7dMA2FWEu+jHKmsKPeq5yDcCvXeHevqZd5OI=
 github.com/MichaelMure/go-term-markdown v0.1.4 h1:Ir3kBXDUtOX7dEv0EaQV8CNPpH+T7AfTh0eniMOtNcs=
 github.com/MichaelMure/go-term-markdown v0.1.4/go.mod h1:EhcA3+pKYnlUsxYKBJ5Sn1cTQmmBMjeNlpV8nRb+JxA=
 github.com/MichaelMure/go-term-text v0.3.1 h1:Kw9kZanyZWiCHOYu9v/8pWEgDQ6UVN9/ix2Vd2zzWf0=
@@ -10,8 +14,8 @@ github.com/alecthomas/colour v0.0.0-20160524082231-60882d9e2721 h1:JHZL0hZKJ1VEN
 github.com/alecthomas/colour v0.0.0-20160524082231-60882d9e2721/go.mod h1:QO9JBoKquHd+jz9nshCh40fOfO+JzsoXy8qTHF68zU0=
 github.com/alecthomas/kong v0.2.1-0.20190708041108-0548c6b1afae/go.mod h1:+inYUSluD+p4L8KdviBSgzcqEjUQOfC5fQDRFuc36lI=
 github.com/alecthomas/repr v0.0.0-20180818092828-117648cd9897/go.mod h1:xTS7Pm1pD1mvyM075QCDSRqH6qRLXylzS24ZTpRiSzQ=
-github.com/alecthomas/repr v0.5.2 h1:SU73FTI9D1P5UNtvseffFSGmdNci/O6RsqzeXJtP0Qs=
-github.com/alecthomas/repr v0.5.2/go.mod h1:Fr0507jx4eOXV7AlPV6AVZLYrLIuIeSOWtW57eE/O/4=
+github.com/alecthomas/repr v0.5.3 h1:Ebk3yZ0kvrHC7TkTHLDJGDq1LxKeu9sQBQREFMcesS8=
+github.com/alecthomas/repr v0.5.3/go.mod h1:Fr0507jx4eOXV7AlPV6AVZLYrLIuIeSOWtW57eE/O/4=
 github.com/aymanbagabas/go-osc52/v2 v2.0.1 h1:HwpRHbFMcZLEVr42D4p7XBqjyuxQH5SMiErDT4WkJ2k=
 github.com/aymanbagabas/go-osc52/v2 v2.0.1/go.mod h1:uYgXzlJ7ZpABp8OJ+exZzJJhRNQ2ASbcXHWsFqH8hp8=
 github.com/charmbracelet/bubbles v1.0.0 h1:12J8/ak/uCZEMQ6KU7pcfwceyjLlWsDLAxB5fXonfvc=
diff --git a/pkg/es/index_template.go b/pkg/es/index_template.go
index bc2dfa0..cec4652 100644
--- a/pkg/es/index_template.go
+++ b/pkg/es/index_template.go
@@ -28,6 +28,7 @@ import (
 
 	"codeberg.org/scip/esctl/pkg/cfg"
 	"codeberg.org/scip/esctl/pkg/printer"
+	"codeberg.org/scip/mapmap"
 	"github.com/elastic/go-elasticsearch/v9/typedapi/esdsl"
 	"github.com/elastic/go-elasticsearch/v9/typedapi/types"
 )
@@ -61,31 +62,9 @@ func IndexTemplateList(conf *cfg.Config, filter string) error {
 	table := printer.NewTable(conf, 5, 0)
 	table.Addheaders("name", "description", "index patterns", "priority")
 
-	for _, tpl := range res.IndexTemplates {
-		if !conf.Hidden && strings.HasPrefix(tpl.Name, ".") {
-			continue
-		}
-
-		if filter != "" && !strings.Contains(tpl.Name, filter) {
-			continue
-		}
-
-		if len(conf.Filter) > 0 {
-			skip := true
-
-			for _, filter := range conf.Filter {
-				for _, pattern := range tpl.IndexTemplate.IndexPatterns {
-					if strings.Contains(pattern, filter) {
-						skip = false
-					}
-				}
-			}
-
-			if skip {
-				continue
-			}
-		}
+	tplList := filterIndexTemplates(conf, filter, res.IndexTemplates)
 
+	for _, tpl := range tplList {
 		desc := strings.TrimPrefix(strings.TrimSuffix(string(tpl.IndexTemplate.Meta_["description"]), `"`), `"`)
 
 		var prio int64
@@ -101,6 +80,32 @@ func IndexTemplateList(conf *cfg.Config, filter string) error {
 	return table.Print()
 }
 
+// Filter index templates by name, index pattern or hidden flag, using
+// mapmap.Slicer
+func filterIndexTemplates(conf *cfg.Config, nameFilter string,
+	templates []types.IndexTemplateItem) []types.IndexTemplateItem {
+	return mapmap.NewSlicer(templates).MapSliceValuesImmutable(func(tpl types.IndexTemplateItem) bool {
+		if !conf.Hidden && strings.HasPrefix(tpl.Name, ".") {
+			return false
+		}
+
+		if nameFilter != "" && !strings.Contains(tpl.Name, nameFilter) {
+			return false
+		}
+
+		if len(conf.Filter) > 0 {
+			if !mapmap.NewSlicer(tpl.IndexTemplate.IndexPatterns).
+				FindSliceInSlice(conf.Filter, func(val, find string) bool {
+					return strings.Contains(val, find)
+				}) {
+				return false
+			}
+		}
+
+		return true
+	})
+}
+
 func IndexTemplateShow(conf *cfg.Config, tplname string) error {
 	res, err := conf.DefaultCluster.ES().Indices.GetIndexTemplate().
 		Name(tplname).