The Straw - Aluminium (practically lasts forever)
The Case - RECYCLED ABS Plastic (support recycling of plastics!!)
Chewable silicone tips - Food Grade Silicone
The Classified PDF - Months of late nights, brain juice and many many bites
To be very honest with you, we have yet to test our silicone tips to destruction. We estimate they should be able to last you for more than a year however we will only be able to confirm once we speak to our manufacturers face to face.