Very compact but with lots of space inside.

Three external pockets for the small items/water bottle and internal compartments. 

Backpack straps.

Material:

Outside -

-Back -50% polyester/50% PVC (620g/m²) 

-Front - 85% polyester/15% polyurethane. Waterproof fabric with water-repellent finish (165g/m²)

Lining - 100% polyester (105g/m²)

Size:

Height - 30cm

Width - 32cm

Depth - 12cm (excluding back pockets)