Lost or misplaced drink bottle parts? Our replacement straw top twin pack can help. Now sold separately to help minimize unnecessary spare parts and lessen our environmental impact, our straw tops are designed especially to fit the 15oz and 20oz tritan™ drink bottle. Made from silicone, the new spill proof, easy drink straw has a simple and easier sucking action for all day H20 on the go. BPA, Phthalates and PVC Free.