This free water bottle mock-up allows you to create a photorealistic presentation of a packaging design or branding for your client. As far as customization is concerned, it is very flexible. You can modify everything you can think of via smart objects - the bottle cap, the background, the color or even the reflection level, for example. It is ideal for presenting your designs, both because it looks fantastic and because it is available in high resolution - 4000 x 3000 px @ 300 dpi.
Thanks to Mockup World for the amazing water bottle mockup design. If that wasn't enough for you, jump over to their site where you can find lots of other interesting mockups - both free and paid ones.