diff --git a/CHANGELOG.md b/CHANGELOG.md
index d9b05d29..8a110b2c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -36,6 +36,7 @@ Validators are now much more powerful [#118], all built in validators upgraded t
 
 Other changes:
 
+* Dropped `set_*` names on options, using `type_name` and `type_size` instead of `set_custom_option`. Methods return this.
 * Added `->each()` to make adding custom callbacks easier [#126]
 * Added filter argument to `get_subcommands`, `get_options`; use empty filter `{}` to avoid filtering
 * Added `get_groups()` to get groups
diff --git a/README.md b/README.md
index 10c50049..5ba1372c 100644
--- a/README.md
+++ b/README.md
@@ -180,7 +180,8 @@ The add commands return a pointer to an internally stored `Option`. If you set t
 
 * `->required()`: The program will quit if this option is not present. This is `mandatory` in Plumbum, but required options seems to be a more standard term. For compatibility, `->mandatory()` also works.
 * `->expected(N)`: Take `N` values instead of as many as possible, only for vector args. If negative, require at least `-N`; end with `--` or another recognized option.
-* `->set_custom_option(typename, N)`: Set the name and (optional) intrinsic size of an option. The parser will require multiples of this number if negative.
+* `->type_name(typename)`: Set the name of an Option's type (`type_name_fn` allows a function instead)
+* `->type_size(N)`: Set the intrinsic size of an option. The parser will require multiples of this number if negative.
 * `->needs(opt)`: This option requires another option to also be present, opt is an `Option` pointer.
 * `->excludes(opt)`: This option cannot be given with `opt` present, opt is an `Option` pointer.
 * `->envname(name)`: Gets the value from the environment if present and not passed on the command line.
diff --git a/examples/enum.cpp b/examples/enum.cpp
index 3e841da6..5d404579 100644
--- a/examples/enum.cpp
+++ b/examples/enum.cpp
@@ -17,7 +17,7 @@ int main(int argc, char **argv) {
 
     Level level;
     app.add_set("-l,--level", level, {Level::High, Level::Medium, Level::Low}, "Level settings")
-        ->set_type_name("enum/Level in {High=0, Medium=1, Low=2}");
+        ->type_name("enum/Level in {High=0, Medium=1, Low=2}");
 
     CLI11_PARSE(app, argc, argv);
 
diff --git a/include/CLI/App.hpp b/include/CLI/App.hpp
index c1d30ec4..0c915c2b 100644
--- a/include/CLI/App.hpp
+++ b/include/CLI/App.hpp
@@ -331,7 +331,7 @@ class App {
         CLI::callback_t fun = [&variable](CLI::results_t res) { return detail::lexical_cast(res[0], variable); };
 
         Option *opt = add_option(name, fun, description, false);
-        opt->set_custom_option(detail::type_name<T>());
+        opt->type_name(detail::type_name<T>());
         return opt;
     }
 
@@ -345,11 +345,11 @@ class App {
         CLI::callback_t fun = [&variable](CLI::results_t res) { return detail::lexical_cast(res[0], variable); };
 
         Option *opt = add_option(name, fun, description, defaulted);
-        opt->set_custom_option(detail::type_name<T>());
+        opt->type_name(detail::type_name<T>());
         if(defaulted) {
             std::stringstream out;
             out << variable;
-            opt->set_default_str(out.str());
+            opt->default_str(out.str());
         }
         return opt;
     }
@@ -371,7 +371,7 @@ class App {
         };
 
         Option *opt = add_option(name, fun, description, false);
-        opt->set_custom_option(detail::type_name<T>(), -1);
+        opt->type_name(detail::type_name<T>())->type_size(-1);
         return opt;
     }
 
@@ -393,9 +393,9 @@ class App {
         };
 
         Option *opt = add_option(name, fun, description, defaulted);
-        opt->set_custom_option(detail::type_name<T>(), -1);
+        opt->type_name(detail::type_name<T>())->type_size(-1);
         if(defaulted)
-            opt->set_default_str("[" + detail::join(variable) + "]");
+            opt->default_str("[" + detail::join(variable) + "]");
         return opt;
     }
 
@@ -440,7 +440,7 @@ class App {
         Option *opt = add_option(name, fun, description, false);
         if(opt->get_positional())
             throw IncorrectConstruction::PositionalFlag(name);
-        opt->set_custom_option("", 0);
+        opt->type_size(0);
         return opt;
     }
 
@@ -460,7 +460,7 @@ class App {
         Option *opt = add_option(name, fun, description, false);
         if(opt->get_positional())
             throw IncorrectConstruction::PositionalFlag(name);
-        opt->set_custom_option("", 0);
+        opt->type_size(0);
         return opt;
     }
 
@@ -480,7 +480,7 @@ class App {
         Option *opt = add_option(name, fun, description, false);
         if(opt->get_positional())
             throw IncorrectConstruction::PositionalFlag(name);
-        opt->set_custom_option("", 0);
+        opt->type_size(0);
         opt->multi_option_policy(CLI::MultiOptionPolicy::TakeLast);
         return opt;
     }
@@ -499,7 +499,7 @@ class App {
         Option *opt = add_option(name, fun, description, false);
         if(opt->get_positional())
             throw IncorrectConstruction::PositionalFlag(name);
-        opt->set_custom_option("", 0);
+        opt->type_size(0);
         return opt;
     }
 
@@ -530,7 +530,7 @@ class App {
         Option *opt = add_option(name, fun, description, false);
         std::string typeval = detail::type_name<T>();
         typeval += " in {" + detail::join(options) + "}";
-        opt->set_custom_option(typeval);
+        opt->type_name(typeval);
         return opt;
     }
 
@@ -550,7 +550,7 @@ class App {
         };
 
         Option *opt = add_option(name, fun, description, false);
-        opt->set_type_name_fn(
+        opt->type_name_fn(
             [&options]() { return std::string(detail::type_name<T>()) + " in {" + detail::join(options) + "}"; });
 
         return opt;
@@ -575,11 +575,11 @@ class App {
         Option *opt = add_option(name, fun, description, defaulted);
         std::string typeval = detail::type_name<T>();
         typeval += " in {" + detail::join(options) + "}";
-        opt->set_custom_option(typeval);
+        opt->type_name(typeval);
         if(defaulted) {
             std::stringstream out;
             out << member;
-            opt->set_default_str(out.str());
+            opt->default_str(out.str());
         }
         return opt;
     }
@@ -601,12 +601,12 @@ class App {
         };
 
         Option *opt = add_option(name, fun, description, defaulted);
-        opt->set_type_name_fn(
+        opt->type_name_fn(
             [&options]() { return std::string(detail::type_name<T>()) + " in {" + detail::join(options) + "}"; });
         if(defaulted) {
             std::stringstream out;
             out << member;
-            opt->set_default_str(out.str());
+            opt->default_str(out.str());
         }
         return opt;
     }
@@ -634,7 +634,7 @@ class App {
         Option *opt = add_option(name, fun, description, false);
         std::string typeval = detail::type_name<std::string>();
         typeval += " in {" + detail::join(options) + "}";
-        opt->set_custom_option(typeval);
+        opt->type_name(typeval);
 
         return opt;
     }
@@ -660,7 +660,7 @@ class App {
         };
 
         Option *opt = add_option(name, fun, description, false);
-        opt->set_type_name_fn([&options]() {
+        opt->type_name_fn([&options]() {
             return std::string(detail::type_name<std::string>()) + " in {" + detail::join(options) + "}";
         });
 
@@ -691,9 +691,9 @@ class App {
         Option *opt = add_option(name, fun, description, defaulted);
         std::string typeval = detail::type_name<std::string>();
         typeval += " in {" + detail::join(options) + "}";
-        opt->set_custom_option(typeval);
+        opt->type_name(typeval);
         if(defaulted) {
-            opt->set_default_str(member);
+            opt->default_str(member);
         }
         return opt;
     }
@@ -720,11 +720,11 @@ class App {
         };
 
         Option *opt = add_option(name, fun, description, defaulted);
-        opt->set_type_name_fn([&options]() {
+        opt->type_name_fn([&options]() {
             return std::string(detail::type_name<std::string>()) + " in {" + detail::join(options) + "}";
         });
         if(defaulted) {
-            opt->set_default_str(member);
+            opt->default_str(member);
         }
         return opt;
     }
@@ -749,11 +749,11 @@ class App {
         };
 
         CLI::Option *opt = add_option(name, fun, description, defaulted);
-        opt->set_custom_option(label, 2);
+        opt->type_name(label)->type_size(2);
         if(defaulted) {
             std::stringstream out;
             out << variable;
-            opt->set_default_str(out.str());
+            opt->default_str(out.str());
         }
         return opt;
     }
diff --git a/include/CLI/Option.hpp b/include/CLI/Option.hpp
index db625576..d0335ff9 100644
--- a/include/CLI/Option.hpp
+++ b/include/CLI/Option.hpp
@@ -174,7 +174,7 @@ class Option : public OptionBase<Option> {
     /// A human readable type value, set when App creates this
     ///
     /// This is a lambda function so "types" can be dynamic, such as when a set prints its contents.
-    std::function<std::string()> type_name_;
+    std::function<std::string()> type_name_{[]() { return std::string(); }};
 
     /// True if this option has a default
     bool default_{false};
@@ -285,7 +285,7 @@ class Option : public OptionBase<Option> {
     Option *check(const Validator &validator) {
         validators_.emplace_back(validator.func);
         if(!validator.tname.empty())
-            set_type_name(validator.tname);
+            type_name(validator.tname);
         return this;
     }
 
@@ -630,15 +630,17 @@ class Option : public OptionBase<Option> {
     }
 
     /// Puts a result at the end
-    void add_result(std::string s) {
+    Option *add_result(std::string s) {
         results_.push_back(s);
         callback_run_ = false;
+        return this;
     }
 
     /// Set the results vector all at once
-    void set_results(std::vector<std::string> results) {
+    Option *set_results(std::vector<std::string> results) {
         results_ = results;
         callback_run_ = false;
+        return this;
     }
 
     /// Get a copy of the results
@@ -651,36 +653,44 @@ class Option : public OptionBase<Option> {
     /// @name Custom options
     ///@{
 
-    /// Set a custom option, typestring, type_size
-    void set_custom_option(std::string typeval, int type_size = 1) {
-        set_type_name(typeval);
+    /// Set the type function to run when displayed on this option
+    Option *type_name_fn(std::function<std::string()> typefun) {
+        type_name_ = typefun;
+        return this;
+    }
+
+    /// Set a custom option typestring
+    Option *type_name(std::string typeval) {
+        type_name_fn([typeval]() { return typeval; });
+        return this;
+    }
+
+    /// Set a custom option size
+    Option *type_size(int type_size) {
         type_size_ = type_size;
         if(type_size_ == 0)
             required_ = false;
         if(type_size < 0)
             expected_ = -1;
+        return this;
     }
 
     /// Set the default value string representation
-    void set_default_str(std::string val) { defaultval_ = val; }
+    Option *default_str(std::string val) {
+        defaultval_ = val;
+        return this;
+    }
 
     /// Set the default value string representation and evaluate
-    void set_default_val(std::string val) {
-        set_default_str(val);
+    Option *default_val(std::string val) {
+        default_str(val);
         auto old_results = results_;
         results_ = {val};
         run_callback();
         results_ = std::move(old_results);
+        return this;
     }
 
-    /// Set the type name displayed on this option
-    void set_type_name(std::string typeval) {
-        set_type_name_fn([typeval]() { return typeval; });
-    }
-
-    /// Set the type function to run when displayed on this option
-    void set_type_name_fn(std::function<std::string()> typefun) { type_name_ = typefun; }
-
     /// Get the typename for this option
     std::string get_type_name() const { return type_name_(); }
 };
diff --git a/tests/AppTest.cpp b/tests/AppTest.cpp
index 76537e14..c54ea2c2 100644
--- a/tests/AppTest.cpp
+++ b/tests/AppTest.cpp
@@ -1504,7 +1504,7 @@ TEST_F(TApp, CustomDoubleOption) {
         custom_opt = {stol(vals.at(0)), stod(vals.at(1))};
         return true;
     });
-    opt->set_custom_option("INT FLOAT", 2);
+    opt->type_name("INT FLOAT")->type_size(2);
 
     args = {"12", "1.5"};
 
diff --git a/tests/HelpTest.cpp b/tests/HelpTest.cpp
index 17bee24c..e5cdb565 100644
--- a/tests/HelpTest.cpp
+++ b/tests/HelpTest.cpp
@@ -222,8 +222,8 @@ TEST(THelp, ManualSetters) {
     int x = 1;
 
     CLI::Option *op1 = app.add_option("--op", x);
-    op1->set_default_str("12");
-    op1->set_type_name("BIGGLES");
+    op1->default_str("12");
+    op1->type_name("BIGGLES");
     EXPECT_EQ(x, 1);
 
     std::string help = app.help();
@@ -231,7 +231,7 @@ TEST(THelp, ManualSetters) {
     EXPECT_THAT(help, HasSubstr("=12"));
     EXPECT_THAT(help, HasSubstr("BIGGLES"));
 
-    op1->set_default_val("14");
+    op1->default_val("14");
     EXPECT_EQ(x, 14);
     help = app.help();
     EXPECT_THAT(help, HasSubstr("=14"));
@@ -556,7 +556,7 @@ TEST(THelp, CustomDoubleOption) {
         custom_opt = {stol(vals.at(0)), stod(vals.at(1))};
         return true;
     });
-    opt->set_custom_option("INT FLOAT", 2);
+    opt->type_name("INT FLOAT")->type_size(2);
 
     EXPECT_THAT(app.help(), Not(HasSubstr("x 2")));
 }
diff --git a/tests/NewParseTest.cpp b/tests/NewParseTest.cpp
index a465618f..68c6adfd 100644
--- a/tests/NewParseTest.cpp
+++ b/tests/NewParseTest.cpp
@@ -17,11 +17,11 @@ add_option(CLI::App &app, std::string name, cx &variable, std::string descriptio
     };
 
     CLI::Option *opt = app.add_option(name, fun, description, defaulted);
-    opt->set_custom_option("COMPLEX", 2);
+    opt->type_name("COMPLEX")->type_size(2);
     if(defaulted) {
         std::stringstream out;
         out << variable;
-        opt->set_default_str(out.str());
+        opt->default_str(out.str());
     }
     return opt;
 }