Easy Drink / prevent straw slip into bottle

When you use straws to drink out of plastic bottles, straws easily to slip into the bottle,
and must put your fingers in the bottle causing unsanitary problems, and even damages the straw.
When drinking, the cap must also be held in hand, These are our main inspiration.
We change the original silhouette of a plastic bottle shape,
an attach a suction piece which stucks the straw into the bottle which prevents the straw from slipping into the bottle.
The bottle caps will also hang on to the edge of the bottle, which changes the whole idea of a traditional bottle.