loose-back

例句：

1. 1. The loose-back design makes it easy to adjust the fit.
   这种松紧带设计使得调整合身变得容易。
2. 2. The loose-back pants are perfect for running errands around town.
   松紧带裤子非常适合在城里办事时穿着。
3. 3. The loose-back jacket is a great choice for outdoor activities.
   松紧带夹克是户外活动的理想选择。