A 4 oz silver metallic flat pouch with a one-way degassing valve, for coffee samples, single-origin minis and gift sets. Size: 5.5" W × 8.3" H (flat, no gusset) Thickness: 3 mil Valve: One-way CO₂ degassing valve Closure: Heat seal Features: Tear notches Material: Glossy metalized foil laminate, high barrier against oxygen, moisture, light and