The ergonomic prime combines an innovative back system with plenty of volume for everything needed in school. The flexible back system grows from 100–150 cm.

The flexible pack impresses with its height-adjustable back system from 100 to 150 cm and is particularly ergonomic, as the weight is carried close to the back.

The flexible model accompanies big kids from 120 to 170 cm. Thanks to its clever design, it offers 4 liters more volume than the pack & cubo without increasing its own weight.