Dr Brown\'s Microwave Steam Steriliser Bags are perfect for sterilizing away from home or while traveling. 5 Per Pack. Dr Brown\'s Microwave Steam S iser Bags quickly and effectively s ise parts from Dr Brown\'s baby bottles, eliminating 99. 9% of most household bacteria and germs. Designed to fit all Dr Brown\'s baby bottles and parts. Easy to use and ideal for travelling. Just put them in the microwave, add water and in less than two minutes you\'re done!Reusable - 20 uses per bag.