Lock andamp; Lock are the originators of the 100% air and liquid-tight food storage container concept, with the distinctive snap-down locking hinges and silicone seal. The four-hinged lids have each been tested to open and close more than 3 million times, to guarantee reliabilty, and the hollow silicone seal in the rim of the lid has superior compression and restoration properties to ensure an airtight seal. Lock andamp; Lock containers have endless uses around the home, not just for food storage i.e. kidand#39;s toys, in the garage, DIY, sewing, first aid, organising drawers, etc. Features - 100% air-tight andamp; liquid-tight. - Food stays fresher for longer than normal. - Stackable design creates up to 40% more usable space in fridges, freezers andamp; cupboards. - Easy to use and clean. - Safe for use in freezer, microwave andamp; dishwasher (top rack). 101 x 44mm