The b.box Essential Sippy Cup Replacement Straws and cleaning kit allows you to get more from your award winning b.box Essential Sippy Cup. Straws get old and worn after a while, but rather than throw your whole cup away simply replace the parts that need replacing. The Replacement Straw and Cleaning Kit includes two replacement straws that are made from durable and long-wearing silicone and polypropylene that is BPA, Phthalates and PVC free for added piece of mind. A cleaning brush allows the internals of the straw to be cleaned to maximize its lifespan. Always keeps your Sippy Cup as new and hygienic with the b.box Essential Sippy Cup Replacement Straws and Cleaning Kit. b.box is a revolutionary and innovative brand that is passionate about creating fun and functional everyday items for babies and toddlers aged 0-3 years. Design in Australia by mums Danielle and Monique, b.box was launched in 2009 and has been embraced worldwide, gaining critical acclaim and winning numerous awards for its creative and practical range. Whether its comfort, safety or ease of use that you are after, b.box has it covered. ExpirationThis product has no expiration date or the manufacturer has not provided an expiration date.