Leak-proof & Dust-proof - With a Patented minimalist leak-proof structural design, you dont need to worry about leaking liquids and wet your backpack and books. It is lightweight with unique dust-proof technology and dishwasher-safe, making it easy to clean and maintain.Safe - This 600ml collapsible water bottle is made from featured food-grade platinum silicone that is BPA-free, odorless, passed SGS,LFGB, and obtained FDA certification. Its safe and hygienic for daily use, even kids can drink with confidence.Sturdy - The reusable water bottle is impact-resistant and lightweight, sturdy enough to resist any dropping, squashing, smashing, or hit, unlike those glass cups and plastic bottles. It's suitable for travel, outdoors, and on the go.Portable - The collapsible and foldable design makes this TSA-approved travel water bottle easy to carry while traveling and passing the security in the airport. The included strap makes it easy to collapse and ensures you won't lose it.Sustainable Lifestyle - collapsible water bottle is reusable, sturdy, and portable, reducing the need for single-use plastic bottles. The silicone material we use is eco-friendly and our packaging uses 95% less plastic. It makes an ideal gift for those who share a healthy and sustainable lifestyle.