Thermos Intak 18 oz Hydration Water Bottle, Leak Proof, BPA Free, Purple Made from BPA-free, impact resistant and dishwasher durable Eastman Tritan copolyester. Flip-up drinking straw is safe to use. Leak-proof lid with integrated carry loop. Ergonomic design is comfortable to grip. Dishwasher safe; will not retain flavors or odors.