The Buddies Super Slick Silicone Storage Ball is made using food-grade silicone. It's designed to be shatterproof, waterproof and airtight! The Super Slick Ball holds up to 5.6ml of herbal extract and is 1.25 inches in diameter. Your product won't stick to the ball itself because of its Super Slick design! Just give the container a squeeze, and you're good to go. Each order comes with 2 of these silicone balls.