€31 with coupon for 90FUN Leisure Backpack 14 inch Laptop Bag Waterproof Men Women Business Travel Bags from Xiaomi Youpin – Grey from BANGGOOD

The 90Fun bag pack is made of 100% Polyester fabric with an inne lining of plyester fiber and polyamide fibers.

The entire surface on all angles are water repellent and the bottom also has a waterproof coating, meaning the bag is entirely water proof.
The bag pack uses a front zipper which opens from the centre and extends t the two sides.
The bag pack is also elastic and can expand. In addition,  it can carry a 14-inch laptop as well as other valuables as there are enough protective material to cushion the gadgets from shock.