<div class="col-lg-4">
                                <div class="panel panel-default">
                                    <div class="panel-body">
                                        Imagen
                                    </div>
                                    <div class="panel-footer">
                                            <div class="row">
                                                    <div class="col-lg-4 col-md-4 col-xs-4">
                                                            <button class="btn btn-default btn-xs" type="button">-</button>
                                                    </div>
                                                    <div class="col-lg-4 col-md-4 col-xs-3">
                                                        <input class="form form-control input-sm" type="text">
                                                    </div>
                                                    <div class="col-lg-4 col-md-4 col-xs-4">
                                                        <button class="btn btn-default btn-xs"  type="button">+</button>
                                                    </div>
                                                    <div class="col-lg-4 col-md-4 col-xs-4">
                                                        <button class="btn btn-default btn-sm" type="button">Añadir</button>
                                                    </div>
                                            </div>
                                        </div>
                                    </div>
                                </div>