The exceptionally lightweight Ergobag Flex school backpack offers the 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 provides plenty of space for all school supplies without unnecessarily burdening a child’s back.
Thanks to the innovative sliding back system “Your-Size-System”, the backpack can grow with the child from 100 to 150 cm in height (approximately from 5 to 10 years). The backpack supports healthy development by transferring most of the load from the shoulders to the stable pelvic area.
- 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 zip compartment in the lid. - Side pockets
The side pockets offer space for a water bottle or umbrella, giving your child quick and easy access to the most important items when needed. - 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. - Magnetic buckle
Easy fastening for small hands. The high-quality magnetic closure can be slid to the open position from the side and, thanks to magnetic force, closes almost automatically. - Drawstring
Thanks to the flexible shape and drawstring, you can tighten the contents, pull the weight close to the back and ensure maximum carrying ergonomics. - Back padding
The shoulder straps, hip belt and lower back area are generously padded. Even when the backpack is full, it sits comfortably and effectively relieves strain on the child’s back. - Size range up to 150 cm
Children between five and ten years of age grow on average by 30 centimetres. The Ergobag Flex will fit perfectly throughout this period because, thanks to the “Your-Size-System”, it can be adjusted for heights from 100 to 150 cm. - 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! - Always keeps its shape
The backpack has a sturdy, water-resistant base with practical feet, so you can set it down anywhere. If it accidentally falls into a puddle or your child puts it on a wet floor, the items inside stay dry because the bottom section is water-resistant. - Surfaces for Kletties
There are a total of four hook-and-loop fasteners on the school bag for colourful Kletties. This gives every child a unique backpack they can change whenever they like. - Space for talismans
You’ll find two loops on the backpack for attaching Hangies charms. They not only liven up the backpack, but also help your child recognise it quickly among others. - Reflective elements all around
The Ergobag Flex is equipped all around with a large number of reflective elements, making the schoolchild highly visible from all sides and in all weather conditions.
- 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 buckle designed for small children’s hands.
- Sturdy, water-resistant base with feet that reliably protects 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: Unfold the back section and adjust the straps according to the scale matching the child’s height.
2 - Hips: Tighten the padded hip belt firmly to transfer the backpack’s weight to the pelvis.
3 - Shoulders: Tighten the shoulder straps backwards and downwards 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.
Ergobag is a premium German brand of school backpacks that has been offering an innovative combination of ergonomics, sustainability, and playful design since 2010. Its founders came up with the idea of applying the proven principles of hiking backpacks to school backpacks to offer children a healthier and more comfortable way to carry their school supplies. As a result, ergobag has become a pioneer in ergonomic school backpacks that grow with the child and effectively distribute weight between the back and hips.
The brand is known for its focus on environmental sustainability and responsible manufacturing. Since its inception, it has used recycled materials—particularly fabrics made from PET bottles—and is a pioneer in sustainable school backpacks. The brand’s philosophy also emphasizes the use of non-toxic materials, transparent manufacturing processes, and long-lasting products.
Today, ergobag is one of the most respected brands of school backpacks in Europe. Its products have won numerous awards for ergonomics, design, and quality, including certification from the German Institute for Health and Ergonomics (IGR). Thanks to a combination of safety, comfort, originality, and environmental friendliness, the brand has earned the trust of both parents and children and has become a symbol of modern school supplies.










