diff --git a/packages/insomnia-app/app/models/request.js b/packages/insomnia-app/app/models/request.js
index 63629cb7e2..d60970dc98 100644
--- a/packages/insomnia-app/app/models/request.js
+++ b/packages/insomnia-app/app/models/request.js
@@ -39,6 +39,7 @@ export type RequestAuthentication = Object;
 export type RequestHeader = {
   name: string,
   value: string,
+  description?: string,
   disabled?: boolean,
 };
 
@@ -53,6 +54,7 @@ export type RequestParameter = {
 export type RequestBodyParameter = {
   name: string,
   value: string,
+  description?: string,
   disabled?: boolean,
   multiline?: string,
   id?: string,
diff --git a/packages/insomnia-app/app/ui/components/editors/body/form-editor.js b/packages/insomnia-app/app/ui/components/editors/body/form-editor.js
index df66c74be6..7904889323 100644
--- a/packages/insomnia-app/app/ui/components/editors/body/form-editor.js
+++ b/packages/insomnia-app/app/ui/components/editors/body/form-editor.js
@@ -24,6 +24,7 @@ class FormEditor extends PureComponent {
             allowMultiline
             namePlaceholder="name"
             valuePlaceholder="value"
+            descriptionPlaceholder="description"
             handleRender={handleRender}
             handleGetRenderContext={handleGetRenderContext}
             nunjucksPowerUserMode={nunjucksPowerUserMode}
diff --git a/packages/insomnia-app/app/ui/components/editors/body/url-encoded-editor.js b/packages/insomnia-app/app/ui/components/editors/body/url-encoded-editor.js
index 06aae453ed..4f425a5dde 100644
--- a/packages/insomnia-app/app/ui/components/editors/body/url-encoded-editor.js
+++ b/packages/insomnia-app/app/ui/components/editors/body/url-encoded-editor.js
@@ -23,6 +23,7 @@ class UrlEncodedEditor extends PureComponent {
             allowMultiline
             namePlaceholder="name"
             valuePlaceholder="value"
+            descriptionPlaceholder="description"
             onChange={onChange}
             handleRender={handleRender}
             handleGetRenderContext={handleGetRenderContext}
diff --git a/packages/insomnia-app/app/ui/components/editors/request-headers-editor.js b/packages/insomnia-app/app/ui/components/editors/request-headers-editor.js
index 063aaeead1..049fc32d71 100644
--- a/packages/insomnia-app/app/ui/components/editors/request-headers-editor.js
+++ b/packages/insomnia-app/app/ui/components/editors/request-headers-editor.js
@@ -131,6 +131,7 @@ class RequestHeadersEditor extends React.PureComponent<Props> {
             sortable
             namePlaceholder="header"
             valuePlaceholder="value"
+            descriptionPlaceholder="description"
             pairs={request.headers}
             nunjucksPowerUserMode={nunjucksPowerUserMode}
             isVariableUncovered={isVariableUncovered}
diff --git a/packages/insomnia-app/app/ui/components/key-value-editor/editor.js b/packages/insomnia-app/app/ui/components/key-value-editor/editor.js
index 9c904c9df1..2fbc42571e 100644
--- a/packages/insomnia-app/app/ui/components/key-value-editor/editor.js
+++ b/packages/insomnia-app/app/ui/components/key-value-editor/editor.js
@@ -11,6 +11,7 @@ import PromptButton from '../base/prompt-button';
 
 const NAME = 'name';
 const VALUE = 'value';
+const DESCRIPTION = 'description';
 const ENTER = 13;
 const BACKSPACE = 8;
 const UP = 38;
@@ -37,7 +38,16 @@ class Editor extends PureComponent {
 
     this.state = {
       pairs: pairs,
+      displayDescription: false,
     };
+
+    // If any pair has a description, display description field.
+    for (const pair of this.props.pairs) {
+      if (pair.description) {
+        this.state.displayDescription = true;
+        break;
+      }
+    }
   }
 
   _setRowRef(n) {
@@ -98,6 +108,10 @@ class Editor extends PureComponent {
     this._focusedField = null;
   }
 
+  _handleBlurDescription() {
+    this._focusedField = null;
+  }
+
   _handleFocusName(pair) {
     this._setFocusedPair(pair);
     this._focusedField = NAME;
@@ -110,6 +124,12 @@ class Editor extends PureComponent {
     this._rows[pair.id].focusValueEnd();
   }
 
+  _handleFocusDescription(pair) {
+    this._setFocusedPair(pair);
+    this._focusedField = DESCRIPTION;
+    this._rows[pair.id].focusDescriptionEnd();
+  }
+
   _handleAddFromName() {
     this._focusedField = NAME;
     this._addPair();
@@ -121,6 +141,11 @@ class Editor extends PureComponent {
     this._addPair();
   }
 
+  _handleAddFromDescription() {
+    this._focusedField = DESCRIPTION;
+    this._addPair();
+  }
+
   _handleKeyDown(pair, e, value) {
     if (e.metaKey || e.ctrlKey) {
       return;
@@ -168,6 +193,7 @@ class Editor extends PureComponent {
     const pair = {
       name: '',
       value: '',
+      description: '',
     };
 
     // Only add ids if we need 'em
@@ -289,6 +315,8 @@ class Editor extends PureComponent {
       row.focusNameEnd();
     } else if (this._focusedField === VALUE) {
       row.focusValueEnd();
+    } else if (this._focusedField === DESCRIPTION) {
+      row.focusDescriptionEnd();
     }
   }
 
@@ -316,6 +344,10 @@ class Editor extends PureComponent {
     }
   }
 
+  _toggleDescription() {
+    this.setState({ displayDescription: !this.state.displayDescription });
+  }
+
   componentDidUpdate() {
     this._updateFocus();
   }
@@ -327,6 +359,7 @@ class Editor extends PureComponent {
       valueInputType,
       valuePlaceholder,
       namePlaceholder,
+      descriptionPlaceholder,
       handleRender,
       handleGetRenderContext,
       nunjucksPowerUserMode,
@@ -352,16 +385,20 @@ class Editor extends PureComponent {
               index={i} // For dragging
               ref={this._setRowRef}
               sortable={sortable}
+              displayDescription={this.state.displayDescription}
               namePlaceholder={namePlaceholder}
               valuePlaceholder={valuePlaceholder}
+              descriptionPlaceholder={descriptionPlaceholder}
               valueInputType={valueInputType}
               onChange={this._handlePairChange}
               onDelete={this._handlePairDelete}
               onFocusName={this._handleFocusName}
               onFocusValue={this._handleFocusValue}
+              onFocusDescription={this._handleFocusDescription}
               onKeyDown={this._handleKeyDown}
               onBlurName={this._handleBlurName}
               onBlurValue={this._handleBlurValue}
+              onBlurDescription={this._handleBlurDescription}
               onMove={this._handleMove}
               nunjucksPowerUserMode={nunjucksPowerUserMode}
               isVariableUncovered={isVariableUncovered}
@@ -394,16 +431,20 @@ class Editor extends PureComponent {
                   <DropdownItem onClick={this._handleDeleteAll} buttonClass={PromptButton}>
                     Delete All Items
                   </DropdownItem>
+                  <DropdownItem onClick={this._toggleDescription}>Toggle Description</DropdownItem>
                 </Dropdown>
               )}
               className="key-value-editor__row-wrapper--clicker"
+              displayDescription={this.state.displayDescription}
               namePlaceholder={`New ${namePlaceholder}`}
               valuePlaceholder={`New ${valuePlaceholder}`}
+              descriptionPlaceholder={`New ${descriptionPlaceholder}`}
               onFocusName={this._handleAddFromName}
               onFocusValue={this._handleAddFromValue}
+              onFocusDescription={this._handleAddFromDescription}
               allowMultiline={allowMultiline}
               allowFile={allowFile}
-              pair={{ name: '', value: '' }}
+              pair={{ name: '', value: '', description: '' }}
             />
           ) : null}
         </ul>
@@ -429,6 +470,7 @@ Editor.propTypes = {
   maxPairs: PropTypes.number,
   namePlaceholder: PropTypes.string,
   valuePlaceholder: PropTypes.string,
+  descriptionPlaceholder: PropTypes.string,
   valueInputType: PropTypes.string,
   disableDelete: PropTypes.bool,
   onToggleDisable: PropTypes.func,
diff --git a/packages/insomnia-app/app/ui/components/key-value-editor/row.js b/packages/insomnia-app/app/ui/components/key-value-editor/row.js
index 56667d7c8e..bcbd26c075 100644
--- a/packages/insomnia-app/app/ui/components/key-value-editor/row.js
+++ b/packages/insomnia-app/app/ui/components/key-value-editor/row.js
@@ -21,6 +21,7 @@ class KeyValueEditorRow extends PureComponent {
 
     this._nameInput = null;
     this._valueInput = null;
+    this._descriptionInput = null;
     this.state = {
       dragDirection: 0,
     };
@@ -38,6 +39,12 @@ class KeyValueEditorRow extends PureComponent {
     }
   }
 
+  focusDescriptionEnd() {
+    if (this._descriptionInput) {
+      this._descriptionInput.focusEnd();
+    }
+  }
+
   setDragDirection(dragDirection) {
     if (dragDirection !== this.state.dragDirection) {
       this.setState({ dragDirection });
@@ -52,6 +59,10 @@ class KeyValueEditorRow extends PureComponent {
     this._valueInput = n;
   }
 
+  _setDescriptionInputRef(n) {
+    this._descriptionInput = n;
+  }
+
   _sendChange(patch) {
     const pair = Object.assign({}, this.props.pair, patch);
     this.props.onChange && this.props.onChange(pair);
@@ -91,6 +102,10 @@ class KeyValueEditorRow extends PureComponent {
     this._sendChange({ fileName });
   }
 
+  _handleDescriptionChange(description) {
+    this._sendChange({ description });
+  }
+
   _handleTypeChange(def) {
     // Remove newlines if converting to text
     let value = this.props.pair.value || '';
@@ -113,6 +128,10 @@ class KeyValueEditorRow extends PureComponent {
     this.props.onFocusValue(this.props.pair, e);
   }
 
+  _handleFocusDescription(e) {
+    this.props.onFocusDescription(this.props.pair, e);
+  }
+
   _handleBlurName(e) {
     if (this.props.onBlurName) {
       this.props.onBlurName(this.props.pair, e);
@@ -125,6 +144,12 @@ class KeyValueEditorRow extends PureComponent {
     }
   }
 
+  _handleBlurDescription(e) {
+    if (this.props.onBlurDescription) {
+      this.props.onBlurDescription(this.props.pair, e);
+    }
+  }
+
   _handleDelete() {
     if (this.props.onDelete) {
       this.props.onDelete(this.props.pair);
@@ -167,6 +192,46 @@ class KeyValueEditorRow extends PureComponent {
     });
   }
 
+  renderPairDescription() {
+    const {
+      displayDescription,
+      readOnly,
+      forceInput,
+      descriptionPlaceholder,
+      pair,
+      handleRender,
+      handleGetRenderContext,
+      nunjucksPowerUserMode,
+      isVariableUncovered,
+    } = this.props;
+
+    return displayDescription ? (
+      <div
+        className={classnames(
+          'form-control form-control--underlined form-control--wide no-min-width',
+          {
+            'form-control--inactive': pair.disabled,
+          },
+        )}>
+        <OneLineEditor
+          ref={this._setDescriptionInputRef}
+          readOnly={readOnly}
+          forceInput={forceInput}
+          placeholder={descriptionPlaceholder || 'Description'}
+          defaultValue={pair.description || ''}
+          onChange={this._handleDescriptionChange}
+          onBlur={this._handleBlurDescription}
+          onKeyDown={this._handleKeyDown}
+          onFocus={this._handleFocusDescription}
+          render={handleRender}
+          getRenderContext={handleGetRenderContext}
+          nunjucksPowerUserMode={nunjucksPowerUserMode}
+          isVariableUncovered={isVariableUncovered}
+        />
+      </div>
+    ) : null;
+  }
+
   renderPairValue() {
     const {
       pair,
@@ -343,14 +408,12 @@ class KeyValueEditorRow extends PureComponent {
             />
           </div>
           <div
-            className={classnames(
-              'form-control form-control--underlined form-control--wide no-min-width',
-              {
-                'form-control--inactive': pair.disabled,
-              },
-            )}>
+            className={classnames('form-control form-control--underlined form-control--wide', {
+              'form-control--inactive': pair.disabled,
+            })}>
             {this.renderPairValue()}
           </div>
+          {this.renderPairDescription()}
 
           {this.renderPairSelector()}
 
@@ -405,10 +468,13 @@ KeyValueEditorRow.propTypes = {
   onDelete: PropTypes.func.isRequired,
   onFocusName: PropTypes.func.isRequired,
   onFocusValue: PropTypes.func.isRequired,
+  onFocusDescription: PropTypes.func.isRequired,
+  displayDescription: PropTypes.bool,
   index: PropTypes.number.isRequired,
   pair: PropTypes.shape({
     name: PropTypes.string.isRequired,
     value: PropTypes.string,
+    description: PropTypes.string,
     fileName: PropTypes.string,
     type: PropTypes.string,
     disabled: PropTypes.bool,
@@ -420,6 +486,7 @@ KeyValueEditorRow.propTypes = {
   onKeyDown: PropTypes.func,
   onBlurName: PropTypes.func,
   onBlurValue: PropTypes.func,
+  onBlurDescription: PropTypes.func,
   handleRender: PropTypes.func,
   handleGetRenderContext: PropTypes.func,
   nunjucksPowerUserMode: PropTypes.bool,
@@ -428,6 +495,7 @@ KeyValueEditorRow.propTypes = {
   handleGetAutocompleteValueConstants: PropTypes.func,
   namePlaceholder: PropTypes.string,
   valuePlaceholder: PropTypes.string,
+  descriptionPlaceholder: PropTypes.string,
   valueInputType: PropTypes.string,
   forceInput: PropTypes.bool,
   allowMultiline: PropTypes.bool,
@@ -507,4 +575,8 @@ target.prototype.focusValueEnd = function() {
   this.decoratedRef.current.decoratedRef.current.focusValueEnd();
 };
 
+target.prototype.focusDescriptionEnd = function() {
+  this.decoratedRef.current.decoratedRef.current.focusDescriptionEnd();
+};
+
 export default target;
diff --git a/packages/insomnia-app/app/ui/components/request-pane.js b/packages/insomnia-app/app/ui/components/request-pane.js
index 13c18ee2d1..97e60f2b52 100644
--- a/packages/insomnia-app/app/ui/components/request-pane.js
+++ b/packages/insomnia-app/app/ui/components/request-pane.js
@@ -374,6 +374,7 @@ class RequestPane extends React.PureComponent<Props> {
                   allowMultiline
                   namePlaceholder="name"
                   valuePlaceholder="value"
+                  descriptionPlaceholder="description"
                   pairs={request.parameters}
                   handleRender={handleRender}
                   handleGetRenderContext={handleGetRenderContext}