25 BPA-free airtight bags with ZIP closure and vacuum valve - Different sizes: 5 bags 19 x 22 cm, 10 bags 27 x 29 cm, 10 bags 26 x 40 cm. Allows fresh food to be preserved for up to 8 times longer and vacuum cooking preserving their colors, tastes and nutrients. Multiple use: environmentally friendly and economical concept. Ultra resistant bags, san