Constructing the Vest
Start by creating the vest from nylon mesh material, incorporating designs for inserts to accommodate the semi-rigid spine support and gel cushioning.

3D Printing the Semi-Rigid Spine Support
3D print the semi-rigid spine support using Polyurethane Foam Plastic filament.

Cutting the Gel Cushioning Insert
Cut the gel cushioning to size from a pre-manufactured gel material sheet using a cutting tool.

Sewing Velcro Straps
Sew the Velcro straps onto the nylon mesh vest for adjustability and secure fitting.

Final Assembly
Insert the gel cushioning and the semi-rigid spine support into the vest, ensuring everything is securely in place.