LEAK PROOF- Unlike our competitors, our empty glass bottles are leakproof by design, including a slip that helps seal the bottle when closed WIDE MOUTH- Allows for fruit or craft supplies to fit into these reusable water bottles. Our clear water bottle mouth is 40% bigger than a normal glass water bottle opening FUNCTIONAL- This product functions as a smoothie bottle, craft bottle, and sensory bottle. These heavy-duty glass containers are great juicing bottles and won't disappoint MATTE BLACKCAPS- Make it easy on the eyes and create that sleek look you need when using these clear bottles HOW DOES IT HELP YOU? These are perfect for storing drink water, juices, smoothies, or as an air tight jar for cooking sauces & essential oils. Use them for easy refrigerator organization, or take them with you to the gym, office, picnic, or wherever life takes you. Suitable for both warm or cold liquids BUY WITH CONFIDENCE: We are the trusted kitchen brand with thousands of happy customers. You get a full unconditional money back guarantee if you are not happy with these glass bottles.