Cortex Polymer Armor rocks full torso protection with super-lightweight, vented SAS-TEC elements for bombproof comfort and a killer fit.Cortex Polymer Armor rocks full torso protection with super-lightweight, vented SAS-TEC elements for bombproof comfort. Its strategically integrated, 4-way stretch panels and a discreet waist belt mean that whatever your body shape or riding position, it fits you like a boss.