Stainless Steel Bottles**: Often insulated, they have a sleek and modern design. They can come in a variety of colors and usually have a screw top.

2. **Glass Bottles**: They have a sleek look and often have a silicone protector to prevent breakage. They can also have a bamboo or metal cap.

3. **Reusable Plastic Bottles**: Lightweight and available in a variety of designs, they often have a built-in straw or screw top.

4. **Infuser Bottles**: These bottles have a compartment to add fruit or herbs, allowing you to create flavored drinks.

5. **Personalized Bottles**: Some may have personalized designs or engravings, making them unique.