Stasher's reusable silicone food storage bags ensure you'll never need to buy plastic, single-use zip-seal bags again. Available in a wide range of shapes, sizes, and colours — like the Stasher Reusable Silicone Sandwich Bag (£14) shown here — you can use Stasher bags to transport food, store fruit and vegetables, freeze food, and even heat up leftovers in either the microwave or oven (yes, really).