Pockets utilise an oxo-biodegradable additive which rapidly degrades the pocket when discarded or left in direct sunlight. After suitable disposal the pockets will ultimately biodegrade in 8-12 months in most cases. A4 top opening, 50-micron polypropylene. Reinforced spine for extra strength. Copysafe - ink will not lift from copy. Multi-punched to fit most binders. All packaging is 100% biodegradable if appropriately disposed of. Size: A4. Clear. Packed 100.