Wisport backpacks are designed for maximum comfort even during longer transfers, therefore, special attention has been paid to the back system. The SAS® (Semi Adjustable System) is a system composed of textile straps and special rails made from aluminum alloy, which aim to stabilize the backpack even with uneven loads and distribute weight so that the back is stressed evenly.
The backpack is adjustable thanks to the unique design of the hip belt. It has an asymmetrical design, and by rotating it 180 degrees and reattaching it, the back part is lengthened by approximately 7 cm. In the case of a small load weight, the backpack can also be used without this belt.
All parts of the backpack that are in contact with the user's body have an ergonomic shape and are made from materials that improve comfort. Special foam covered by mesh (AIR NET, AIR MESH) is used on the straps and back section. This foam, thanks to air channels, allows the skin on the back to breathe and sweat to be wicked away, while its padding effect prevents bruises and delays the onset of fatigue, which is appreciated especially during longer journeys.