The space-design stasher is a reusable storage bag that is self sealing, airtight, leak proof, and is made from clear, platinum silicone (BPA and BPS free). The bag measures 18.5 x 19cm / 7.25 x 7.5 inches with a capacity of 450ml / 15oz. The stasher is the revolutionary answer to plastic bags and containers. The bag is perfect for food, travel, school, and much more. The stasher storage bag is freezer, microwave, and dishwasher safe.