High quality materials: The replacement bottle cap is made of PP + TPR material, BPA free, safe, non-toxic and durable.
Package includes: 2 x straw caps, 4 x straws, 2 x straw brushes.
Comfortable and practical: The smart and ergonomic design makes it non-slip to carry and easy to twist and drink.In addition, it feels good on the lips and brings a pleasant drinking experience.
Widely compatible:The straw lid is suitable for Hydro Flask 12oz, 16oz, 18oz, 21oz, 24oz, 32oz, 40oz, 64oz standard size insulated bottles, compatible with most wide neck sports bottles.
Multi-purpose: Very suitable for hiking, camping, horse riding, running, yoga classes and other indoor and outdoor activities, you can enjoy a drink anywhere.