The drinks bottle would be easily washable. I have had mine 5 years. The idea is that they can be used for water, and manufacturers could sell drinks in concentrated pods, that can be added to water in your bottle for life.This would go hand in hand with the previous idea for more drinking water fountains in public places. Drinks manufacturers could also provide refill stations in public places, rather than selling their products in bottles.We live by the beach and carry out regular beach cleans. The biggest culprit is plastic single use drinks bottles. This would phase them out like we did with single use plastic bags in the uk. We could all have a bottle for life and reduce plastic bottle pollution worldwide.