<?php $current_user = wp_get_current_user(); echo $current_user->user_gender; ?>

<?php

</div>

        </div>
    </div>
    <div class="row">
        <div class="col-sm-4">


            <div class="profile-user-info">
                <div class="profile-info-row">
                    <div class="profile-info-name"> Username </div>

                    <div class="profile-info-value">
                        <span><?php $current_user = wp_get_current_user(); echo $current_user->user_login; ?></span>
                    </div>
                </div>
                <div class="profile-info-row">
                    <div class="profile-info-name"> First Name </div>

                    <div class="profile-info-value">
                        <span><?php $current_user = wp_get_current_user(); echo $current_user->user_firstname; ?></span>
                    </div>
                </div>
                <div class="profile-info-row">
                    <div class="profile-info-name"> Last Name </div>

                    <div class="profile-info-value">
                        <span><?php $current_user = wp_get_current_user(); echo $current_user->user_lastname; ?></span>
                    </div>
                </div>

                <div class="hr hr-8 dotted"></div>

                <div class="profile-info-row">
                    <div class="profile-info-name"> Email </div>

                    <div class="profile-info-value">
                        <a href="mailto:<?php $current_user = wp_get_current_user(); echo $current_user->user_email; ?>"><?php $current_user = wp_get_current_user(); echo $current_user->user_email; ?></a>
                    </div>
                </div>

                <div class="hr hr-8 dotted"></div>

                <div class="profile-info-row">
                    <div class="profile-info-name"> Gender </div>

                    <div class="profile-info-value">
                        <span><?php $current_user = wp_get_current_user(); echo $current_user->user_gender; ?></span>
                    </div>
                </div>

                <div class="profile-info-row">
                    <div class="profile-info-name"> Age </div>

                    <div class="profile-info-value">
                        <span><?php $current_user = wp_get_current_user(); echo $current_user->user_birthday; ?></span>
                    </div>
                </div>

                <div class="profile-info-row">
                    <div class="profile-info-name"> Country</div>

                    <div class="profile-info-value">
                        <span><?php $current_user = wp_get_current_user(); echo $current_user->user_country; ?></span>
                    </div>
                </div>
            </div>


                <?php
                $imgurl = get_field('user_banner',$user->ID);

                if (filter_var($imgurl, FILTER_VALIDATE_URL) === FALSE)
                {
                  $imgurl = wp_get_attachment_url($imgurl);
                }
                   echo '<img src="' . $imgurl . '" alt="image">';
                ?>

                <?php
                $imgurl = get_field('user_avatar',$user->ID);

                if (filter_var($imgurl, FILTER_VALIDATE_URL) === FALSE)
                {
                  $imgurl = wp_get_attachment_url($imgurl);
                }
                   echo '<img src="' . $imgurl . '" alt="image">';
                ?>

        </div>
    </div>
</div>

$image = get_field('user_avatar', $user->ID');
$size = 'full'; // (thumbnail, medium, large, full or custom size)

if( $image ) {
    echo wp_get_attachment_image( $image, $size );
}