The back posture support is a mechanical device whose aim is to assist in supporting the back as well as ensuring that it is well aligned during any physical activity, especially exercise including squats. The design involves a vest like structure featuring a cushioned semi-rigid plate running down from T8 all the way to L5 and tightening straps for the torso area.

Below are the primary physical principles that underpin this device:

1. Mechanical Support and Stability

The semi-rigid spine component gives stability to the spine, preventing over-flexing or over-extension while at the same time allowing the required and normal degree of motion during any activity. This principle is important in facilitating for safe postures during any form of activity to be undertaken.

2. Shock Absorption

The cushioned material used along the semi-rigid spine component makes it comfortable and at the same time, the spine is protected from shocks during movement.

3. Force Distribution

The vest design facilitates distribution of the forces across the back. This reduces localized pressure areas that cause discomforts or oftentimes injuries to the wearer hence increasing the comfort of the users during long hours of use.

4. Adjustable Fit

The device has adjustable straps whose function is to allow users to control the level of support required by them as well as providing customization to accommodate different sizes of the body which enhances the effectiveness as well as the comfort of the item.