ACF Fields Repeatable

Field Options

{
    "id":"whitepaper_acf",
    "title":"Whitepaper ACF",
    "location":[
        [
            {
                "param":"post_type",
                "operator":"==",
                "value":"upnup-whitepapers",
                "order_no":0,
                "group_no":0
            }
        ]
    ],
    "options":{
        "position":"normal",
        "layout":"no_box",
        "hide_on_screen":[
            "permalink",
            "the_content",
            "custom_fields",
            "discussion",
            "comments",
            "revisions",
            "author",
            "format",
            "categories",
            "tags",
            "send-trackbacks"
        ]
    },
    "menu_order":0,
    "fields":[
        {
            "label":"Whitepaper Download",
            "name":"whitepaper_download",
            "type":"file",
            "save_format":"url",
            "library":"all",
            "instructions":"Please be sure to check the size of the file before uploading.",
            "key":4271621926
        },
        {
            "label":"Featured Image",
            "name":"featured_image",
            "type":"image",
            "save_format":"id",
            "preview_size":"whitepaper-feature",
            "library":"all",
            "key":1789204237
        },
        {
            "label":"Copy",
            "name":"copy",
            "type":"textarea",
            "default_value":"",
            "placeholder":"",
            "maxlength":"",
            "rows":"",
            "formatting":"br",
            "key":3985118396
        },
        {
            "label":"Features",
            "name":"features",
            "type":"repeater",
            "row_min":"",
            "row_limit":"",
            "layout":"row",
            "button_label":"Add Item",
            "sub_fields":[
                {
                    "label":"Inside Item",
                    "name":"inside_item",
                    "type":"text",
                    "default_value":"",
                    "placeholder":"",
                    "prepend":"",
                    "append":"",
                    "formatting":"html",
                    "maxlength":"",
                    "key":2001365730
                }
            ],
            "instruction":"What is inside this whitepaper",
            "key":1186381381
        }
    ]
}

single-whitepaper.php

<?php get_header(); ?>

<?php
    // This works
    $copy = get_field('copy');
    
    echo $copy;

    // This returns the # of items in the array
    $items = get_field('features');
    
    // I expect an array, instead I get the number of items in the array
    print_r($items);

    exit;