Function: Suitable for hydrogen flask Series stainless steel cup
Material: high quality PP+TPR
Capacity: 12oz to 64oz vacuum cup universal
Excellent design-Flip top spout can help you drink easier than others.
Please make sure that the internal rubber seal correctly within the cap lining before use to avoid leaking.
Suitable for Hydro Flask Wide Mouth Water Bottles-Just cut one of the 2 plastic straws(included) at a desirable length and make this item compatible with the 18oz, 32oz,40oz, 60oz or 64oz Wide Mouth for Hydro flask sports water bottle instantly!