Multi-day backpacks are suitable for 5-7 night hikes and normally have a capacity of 50-70 liters.
TETON Sports Scout 3400 
The TETON Sports Scout 3400 is ideal for a beginner or a hiker looking for a light weight pack that can accommodate their needs for up to 5 days.
Its main features are as follows:
- 55 liter capacity
- Weight 4.5lbs
- Adjustable to suit a wide range of body sizes
- Suitable for both men and women
- Torso length suitable for 15-19.5 inches
- Dimensions 30″ x 17″ x 12″