Pack Mate’s two Volume Storage vacuum storage bags are extra large in size and have double the capacity of flat bags. For storing bulkier items, the vacuum-packing bags condense piles of linens, towels, bedding and clothing to fit into boxes with bottom and gusset sides, making them easy to store and saving you four times the storage space. The rear of each is transparent to show its contents. Guaranteed airtight, watertight and easy to use, these vacuum storage bags employ Q-squared technology, the latest in valve development from Japan. Keep out of reach of babies and children.