Single / double strap convertible back pack 單肩 / 雙肩背袋

Fully convertible zipper design, single (cross shoulder) strap to double strap back pack,
18 x 8 x 31 cm H, 350 gm, water resistant Oxford canvas.
可以分開拉鍊設計, 由單肩背袋變成双肩背袋, 防水牛津布料, 尺寸 18 x 8 x 31 cm 高, 350 gm 重量