Mighty Nest offers plenty of sippy cups that you and your baby might consider adding to your shopping list Mama. For the colder temperatures ahead, these three options are ideal to keep the milk, juice or water warm for hours. If you’re a chemical conscious mom, your best bet would be the Stainless Steel Sippy . It’s 100% plastic free which means safe and completely toxin free. The Insulated Sippy, on the other hand, is very simple and easy to hold, and it’s perfect for not only cold days but also for hot days as it will keep your baby’s drink cool for a long time. Safe Sippy is a two in one type of cup as it can easily convert to a straw bottle with help of the straw adapter. All of the cups are environmentally friendly, they don’t contain BPA or phthalates. Your baby/toddler can drink up with no worry!