diff --git a/README.md b/README.md
index ee1b212..ad916fd 100644
--- a/README.md
+++ b/README.md
@@ -36,10 +36,10 @@
 
     total := 100
     name := "Single Bar:"
-    // adding a single bar, which will inherit container's width
-    bar := p.Add(int64(total),
-        // progress bar filler with customized style
-        mpb.NewBarFiller(mpb.BarStyle().Lbound("╢").Filler("▌").Tip("▌").Padding("░").Rbound("╟")),
+    // create a single bar, which will inherit container's width
+    bar := p.New(int64(total),
+        // BarFillerBuilder with custom style
+        mpb.BarStyle().Lbound("╢").Filler("▌").Tip("▌").Padding("░").Rbound("╟"),
         mpb.PrependDecorators(
             // display our name with one space on the right
             decor.Name(name, decor.WC{W: len(name) + 1, C: decor.DidentRight}),
diff --git a/_examples/decoratorsOnTop/main.go b/_examples/decoratorsOnTop/main.go
index 16163b6..a6e0ae6 100644
--- a/_examples/decoratorsOnTop/main.go
+++ b/_examples/decoratorsOnTop/main.go
@@ -13,7 +13,9 @@
 	p := mpb.New()
 
 	total := 100
-	bar := p.Add(int64(total), nil,
+	bar := p.New(int64(total),
+		mpb.NopStyle(), // make main bar style nop, so there are just decorators
+		mpb.BarExtender(extended(mpb.BarStyle())), // extend wtih normal bar on the next line
 		mpb.PrependDecorators(
 			decor.Name("Percentage: "),
 			decor.NewPercentage("%d"),
@@ -24,7 +26,6 @@
 				decor.AverageETA(decor.ET_STYLE_GO), "done",
 			),
 		),
-		mpb.BarExtender(nlBarFiller(mpb.NewBarFiller(mpb.BarStyle()))),
 	)
 	// simulating some work
 	max := 100 * time.Millisecond
@@ -36,7 +37,8 @@
 	p.Wait()
 }
 
-func nlBarFiller(filler mpb.BarFiller) mpb.BarFiller {
+func extended(builder mpb.BarFillerBuilder) mpb.BarFiller {
+	filler := builder.Build()
 	return mpb.BarFillerFunc(func(w io.Writer, reqWidth int, st decor.Statistics) {
 		filler.Fill(w, reqWidth, st)
 		w.Write([]byte("\n"))
diff --git a/_examples/io/main.go b/_examples/io/main.go
index 6f2bf89..339d853 100644
--- a/_examples/io/main.go
+++ b/_examples/io/main.go
@@ -19,8 +19,8 @@
 		mpb.WithRefreshRate(180*time.Millisecond),
 	)
 
-	bar := p.Add(total,
-		mpb.NewBarFiller(mpb.BarStyle().Rbound("|")),
+	bar := p.New(total,
+		mpb.BarStyle().Rbound("|"),
 		mpb.PrependDecorators(
 			decor.CountersKibiByte("% .2f / % .2f"),
 		),
diff --git a/_examples/mexicanBar/main.go b/_examples/mexicanBar/main.go
index c157ae9..ce2a733 100644
--- a/_examples/mexicanBar/main.go
+++ b/_examples/mexicanBar/main.go
@@ -20,8 +20,7 @@
 	bs.Tip("\u001b[0m⛵\u001b[36;1m")
 	bs.Padding("_")
 	bs.Rbound("\u001b[0m]")
-	bar := p.Add(int64(total),
-		mpb.NewBarFiller(bs),
+	bar := p.New(int64(total), bs,
 		mpb.PrependDecorators(decor.Name(name)),
 		mpb.AppendDecorators(decor.Percentage()),
 	)
diff --git a/_examples/reverseBar/main.go b/_examples/reverseBar/main.go
index 14a13be..6ac4378 100644
--- a/_examples/reverseBar/main.go
+++ b/_examples/reverseBar/main.go
@@ -12,20 +12,16 @@
 
 func main() {
 	var wg sync.WaitGroup
-	// pass &wg (optional), so p will wait for it eventually
-	p := mpb.New(mpb.WithWaitGroup(&wg))
+	p := mpb.New(
+		// passing &wg will make p.Wait() call wait for it first
+		mpb.WithWaitGroup(&wg),
+	)
 	total, numBars := 100, 3
 	wg.Add(numBars)
 
 	for i := 0; i < numBars; i++ {
 		name := fmt.Sprintf("Bar#%d:", i)
-		bs := mpb.BarStyle()
-		if i == 1 {
-			// reverse Bar#1
-			bs = bs.Tip("<").Reverse()
-		}
-		bar := p.Add(int64(total),
-			mpb.NewBarFiller(bs),
+		bar := p.New(int64(total), condBuilder(i == 1),
 			mpb.PrependDecorators(
 				// simple name decorator
 				decor.Name(name),
@@ -56,6 +52,17 @@
 			}
 		}()
 	}
-	// Waiting for passed &wg and for all bars to complete and flush
+	// wait for all bars to complete and flush
 	p.Wait()
 }
+
+func condBuilder(cond bool) mpb.BarFillerBuilderFunc {
+	return mpb.BarFillerBuilderFunc(func() mpb.BarFiller {
+		bs := mpb.BarStyle()
+		if cond {
+			// reverse Bar on cond
+			bs = bs.Tip("<").Reverse()
+		}
+		return bs.Build()
+	})
+}
diff --git a/_examples/singleBar/main.go b/_examples/singleBar/main.go
index f0b87a3..925a2d5 100644
--- a/_examples/singleBar/main.go
+++ b/_examples/singleBar/main.go
@@ -14,10 +14,10 @@
 
 	total := 100
 	name := "Single Bar:"
-	// adding a single bar, which will inherit container's width
-	bar := p.Add(int64(total),
-		// progress bar filler with customized style
-		mpb.NewBarFiller(mpb.BarStyle().Lbound("╢").Filler("▌").Tip("▌").Padding("░").Rbound("╟")),
+	// create a single bar, which will inherit container's width
+	bar := p.New(int64(total),
+		// BarFillerBuilder with custom style
+		mpb.BarStyle().Lbound("╢").Filler("▌").Tip("▌").Padding("░").Rbound("╟"),
 		mpb.PrependDecorators(
 			// display our name with one space on the right
 			decor.Name(name, decor.WC{W: len(name) + 1, C: decor.DidentRight}),
diff --git a/_examples/spinTipBar/main.go b/_examples/spinTipBar/main.go
index 51aeb10..7d3f2ef 100644
--- a/_examples/spinTipBar/main.go
+++ b/_examples/spinTipBar/main.go
@@ -14,8 +14,8 @@
 
 	total := 100
 	name := "Single Bar:"
-	bar := p.Add(int64(total),
-		mpb.NewBarFiller(mpb.BarStyle().Tip(`-`, `\`, `|`, `/`)),
+	bar := p.New(int64(total),
+		mpb.BarStyle().Tip(`-`, `\`, `|`, `/`),
 		mpb.PrependDecorators(decor.Name(name)),
 		mpb.AppendDecorators(decor.Percentage()),
 	)
diff --git a/_examples/spinnerBar/main.go b/_examples/spinnerBar/main.go
index bf3c8db..368f169 100644
--- a/_examples/spinnerBar/main.go
+++ b/_examples/spinnerBar/main.go
@@ -13,49 +13,28 @@
 func main() {
 	var wg sync.WaitGroup
 	p := mpb.New(
+		// passing &wg will make p.Wait() call wait for it first
 		mpb.WithWaitGroup(&wg),
-		mpb.WithWidth(14),
+		mpb.WithWidth(16),
 	)
 	total, numBars := 101, 3
 	wg.Add(numBars)
 
-	spinnerStyle := []string{"∙∙∙", "●∙∙", "∙●∙", "∙∙●", "∙∙∙"}
-
 	for i := 0; i < numBars; i++ {
 		name := fmt.Sprintf("Bar#%d:", i)
-		var bar *mpb.Bar
-		if i == 0 {
-			bar = p.Add(int64(total),
-				mpb.NewBarFiller(mpb.BarStyle().Lbound("╢").Filler("▌").Tip("▌").Padding("░").Rbound("╟")),
-				mpb.PrependDecorators(
-					// simple name decorator
-					decor.Name(name),
+		bar := p.New(int64(total), condBuilder(i != 0),
+			mpb.PrependDecorators(
+				// simple name decorator
+				decor.Name(name),
+			),
+			mpb.AppendDecorators(
+				// replace ETA decorator with "done" message, OnComplete event
+				decor.OnComplete(
+					// ETA decorator with ewma age of 60
+					decor.EwmaETA(decor.ET_STYLE_GO, 60), "done",
 				),
-				mpb.AppendDecorators(
-					// replace ETA decorator with "done" message, OnComplete event
-					decor.OnComplete(
-						// ETA decorator with ewma age of 60
-						decor.EwmaETA(decor.ET_STYLE_GO, 60), "done",
-					),
-				),
-			)
-		} else {
-			bar = p.Add(int64(total),
-				mpb.NewBarFiller(mpb.SpinnerStyle(spinnerStyle...)),
-				mpb.PrependDecorators(
-					// simple name decorator
-					decor.Name(name),
-				),
-				mpb.AppendDecorators(
-					// replace ETA decorator with "done" message, OnComplete event
-					decor.OnComplete(
-						// ETA decorator with ewma age of 60
-						decor.EwmaETA(decor.ET_STYLE_GO, 60), "done",
-					),
-				),
-			)
-		}
-
+			),
+		)
 		// simulating some work
 		go func() {
 			defer wg.Done()
@@ -75,3 +54,14 @@
 	// wait for all bars to complete and flush
 	p.Wait()
 }
+
+func condBuilder(cond bool) mpb.BarFillerBuilderFunc {
+	return mpb.BarFillerBuilderFunc(func() mpb.BarFiller {
+		if cond {
+			// spinner Bar on cond
+			frames := []string{"∙∙∙", "●∙∙", "∙●∙", "∙∙●", "∙∙∙"}
+			return mpb.SpinnerStyle(frames...).Build()
+		}
+		return mpb.BarStyle().Lbound("╢").Filler("▌").Tip("▌").Padding("░").Rbound("╟").Build()
+	})
+}
diff --git a/_examples/tipOnComplete/main.go b/_examples/tipOnComplete/main.go
index b4d5a23..62a26b7 100644
--- a/_examples/tipOnComplete/main.go
+++ b/_examples/tipOnComplete/main.go
@@ -14,8 +14,8 @@
 
 	total := 100
 	name := "Single Bar:"
-	bar := p.Add(int64(total),
-		mpb.NewBarFiller(mpb.BarStyle().TipOnComplete(">")),
+	bar := p.New(int64(total),
+		mpb.BarStyle().TipOnComplete(">"),
 		mpb.PrependDecorators(decor.Name(name)),
 		mpb.AppendDecorators(decor.Percentage()),
 	)
diff --git a/example_test.go b/example_test.go
index cde49f8..072c8b6 100644
--- a/example_test.go
+++ b/example_test.go
@@ -17,10 +17,10 @@
 
 	total := 100
 	name := "Single Bar:"
-	// adding a single bar, which will inherit container's width
-	bar := p.Add(int64(total),
-		// progress bar filler with customized style
-		mpb.NewBarFiller(mpb.BarStyle().Lbound("╢").Filler("▌").Tip("▌").Padding("░").Rbound("╟")),
+	// create a single bar, which will inherit container's width
+	bar := p.New(int64(total),
+		// BarFillerBuilder with custom style
+		mpb.BarStyle().Lbound("╢").Filler("▌").Tip("▌").Padding("░").Rbound("╟"),
 		mpb.PrependDecorators(
 			// display our name with one space on the right
 			decor.Name(name, decor.WC{W: len(name) + 1, C: decor.DidentRight}),