... grade silicone; 2. flexible,non-stick,durable, 3. impermeable,reuseable; Silicone collapsible cup 1. material :made of 100% food grade silicone with ... any smells or flavours ;6. flexible,non-stick,durable, impermeable, reuseable ; easy to remove , clean and store ; 7.any color ... (when no holes punching) , kitchen cooking,etc .This collapsible cup can also punch holes as a Mini strainer as customer ...