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The exceptionally lightweight Ergobag Flex school backpack is an ideal combination of maximum comfort, flexibility and advanced ergonomics for children in the first years of primary school. With a weight of just 870 grams and an extra-large 23-litre capacity, it offers plenty of space for all school essentials without putting unnecessary strain on a child’s back.

Thanks to the innovative sliding back system “Your-Size-System”, the backpack grows with your child from 100 to 150 cm in height (approximately 5 to 10 years). It supports healthy development by transferring most of the load from the shoulders to the stable pelvic area.

1. Internal organisation
   Children always have a clear overview in the main compartment with space for exercise books. Thanks to the flexible book compartment, heavy school books stay close to the back. Valuables have a safe place in the mesh pocket with a key ring, and the pencil case is always within reach in the zipped compartment in the lid.
2. Side pockets
   The side pockets provide space for a water bottle or umbrella, so your child has quick and easy access to the most important items when needed.
3. Snack compartment
   The front pocket opens easily with a zip – ideal for quickly storing a snack. The compartment is made from leakproof material and the inside can be wiped clean easily in case of accidents.
4. Magnetic clasp
   Simple fastening for small hands. The high-quality magnetic closure can be slid into the open position from the side and, thanks to magnetic force, closes almost automatically.
5. Drawstring
   With the flexible shape and drawstring, you can pull the contents in, bringing the weight close to the back and ensuring maximum carrying ergonomics.
6. Back padding
   The shoulder straps, hip belt and lower back area are generously padded. Even when fully packed, the backpack sits comfortably and effectively relieves strain on your child’s back.
7. Size range up to 150 cm
   Children between the ages of five and ten grow by an average of 30 centimetres. The Ergobag Flex will fit perfectly throughout this period because the “Your-Size-System” can be adjusted for heights from 100 to 150 cm.
8. Sports bag attachment
   Ergonomic and practical – the Ergobag sports bag doesn’t have to be carried only as a backpack! On the way to school, it can be easily attached to the Ergobag Flex at three points. This not only distributes the weight evenly, but also keeps children’s hands free.
9. Always keeps its shape
   The backpack has a firm, water-resistant base with practical feet, so it can be placed anywhere. If it accidentally lands in a puddle or is set down on a wet floor, the items inside stay dry thanks to the water-resistant bottom section.
10. Surfaces for Kletties
    There are four hook-and-loop fasteners on the school bag for colourful Kletties. This gives every child a unique backpack that can be changed whenever they like.
11. Space for talismans
    You’ll find two loops for attaching Hangies charms. They brighten up the backpack and help your child recognise it quickly among others.
12. Reflective elements all around
    The Ergobag Flex is equipped with a large number of reflective elements all around, ensuring excellent visibility from every side and in all weather.

• The flexible internal compartment keeps heavy books as close to the back as possible.
• Insulated front snack pocket made from leakproof, easy-to-clean material.
• Practical side pockets for quick access to a water bottle or umbrella.
• Easy-to-use magnetic clasp designed for small children’s hands.
• Firm, water-resistant base with feet that reliably protects the contents from moisture and dirt.
• 360° reflective elements all around for maximum safety in all weather.
• Option to easily attach the Ergobag sports bag directly to the backpack at three points.
• Creative design with areas for interchangeable Kletties pictures and loops for talismans.

Specifications:

Brand: Ergobag
Model range: Flex (Collection 2026)
Intended for: Schoolchildren (recommended age 6–14 years, height 100–150 cm)
Capacity: 23 l
Dimensions: 42 × 30 × 27 cm (H × W × D)
Weight: 870 g
Material: 100% polyester from recycled textiles with a water-repellent finish (PFC-free)

Correct adjustment in 4 steps

1 - Height: Open up the back section and set the straps according to the scale matching your child’s height.
2 - Hips: Tighten the padded hip belt firmly to transfer the backpack’s weight to the pelvis.
3 - Shoulders: Pull the shoulder straps back and down so the backpack sits comfortably on the back.
4 - Chest: Fasten the height-adjustable chest strap to prevent the shoulder straps from slipping.

Care instructions: Clean the backpack by hand only. Do not machine wash, bleach, iron, tumble dry or dry clean.