protected function render_filters() {
		?>
		<select name="coupon_type" id="dropdown_shop_coupon_type">
			<option value=""><?php esc_html_e( 'Show all types', 'woocommerce' ); ?></option>
			<?php
			$types = wc_get_coupon_types();

			foreach ( $types as $name => $type ) {
				echo '<option value="' . esc_attr( $name ) . '"';

				if ( isset( $_GET['coupon_type'] ) ) { // WPCS: input var ok.
					selected( $name, wc_clean( wp_unslash( $_GET['coupon_type'] ) ) ); // WPCS: input var ok, sanitization ok.
				}

				echo '>' . esc_html( $type ) . '</option>';
			}
			?>
		</select>
		<?php
	}