<p>1. Our tumbler is made of high-grade 100% BPA-free acrylic, non-toxic and no plastic smell, which is also lightweight and extra durable. </p><p></p><p>2. The acrylic tumbler set comes with BPA-Free Lids and reusable Straws. The lid has a rubber gasket which is secured and spill proof. </p><p></p><p>3. The double-wall design keeps a good insulation and reduces condensation. It will keep your drinks colder and hotter longer than simple cups. </p><p></p><p>4. Hand-wash only. The wide mouth opening makes it easy washing. </p><p></p><p>5. You can customize it as you like in many occasions, parties, gifts, outdoor events and sports activities. </p>