Loading... Please wait...Lifefactory's Glass Baby Bottles in 4oz are completely free of potentially harmful chemicals found in many plastic bottles. The bottles are made from toughened glass, a material that is safe and hard wearing. They can be boiled, steamed, microwaved, or cleaned in a dishwasher without deteriorating, there is no need to replace bottles regularly (unlike plastic bottles) and no fear of chemical leaching. The silicone teat is latex-free and non-toxic. The plastic ring, plug and cap contain no polycarbonates and are food grade and recyclable. Any standard size teat will fit on the bottle. Wide neck teats will not fit.