Atomic Live Shield Vest M is an ultra-lightweight level 1 protector vest made from 3-layer foam - with Active Thermo Fit for an instant individual fit and flexibility.Specifications:- Safety Technology: Multi-density 3-Layer Foam- Fabric: Elastic Air Mesh- 4-Way Stretch LycraFit:- Active Thermo Fit- Removable and Height Adjustable BeltExtras: - Breathable- Flexible- Washable- Ultra Lightweight- Weight: 700g