A bottle sling is like a little bag that you can carry your water bottle in. It's like a backpack for your water bottle!
Imagine if you have a water bottle that you want to carry around with you all day, but you don't want to hold it in your hand all the time. That's where the bottle sling comes in.
You can put your water bottle inside the sling and then put the sling over your shoulder. Now your water bottle is safely tucked away, but you can still easily carry it with you wherever you go.
Some bottle slings are also designed to keep your water cool for longer by insulating the bottle. So not only does the sling help you carry your water bottle, but it can also keep your drink nice and cold for longer.
Overall, a bottle sling is a handy little accessory that can make it much easier to carry around your water bottle – and even keep your drink fresh and cool.