Pop Up Lid: The locking mechanism of the flip top(up to lock, down to unlock). One-handed opening for quick pouring or drinking water is helpful when traveling or hiking Dust Proof and Leak Proof: No spills when the locking mechanism stays closed. The flip-down cover protects the drinking spout from dirt and easy to clean Quick Thirst Quencher: The flip lid with 0.75'' wider mouthpiece allows for quickly pouring or drinking water. It is perfectly sized for small sips or large gulps. It also features the carry loop handle that is sturdy and flexible enough to comfortably carry with your whole hand Compatibility: The lid fits perfectly sizes of Hydro Flask standard mouth 18 21 24 oz (inner mouth diameter 1.75") NOT for WIDE MOUTH water bottles Order with No Risk: BPA-free and Toxin-Free, dishwasher safe. Friendly customer service, please contact us if you have any questions

Perfect Insulation: Compared to the traditional straw lid, our spout lid is more insulated, leakproof, and dustproof. The rubber stopper allows the water bottle to be easily locked in temperature, providing a longer-lasting insulation effect so that you can enjoy cold drinks in hot summer.

Multiple Compatibility - Suitable for most of Hydro Flask standard mouth water bottles.

LEAK PROOF - Secure locking of standard mouth lid tested strictly to hold every drop inside the bottle so that you can carry your bottle in a backpack, purse, or bag.

EASY DRINKING - Top cover is fixed elaborately and will not bump against your nose while drinking. Drinking spout allows for a generous flow of water without having to suck too hard.

Spout lid for hydroflask Standard Mouth water bottle and below brand.

Compatible with: Standard Mouth diameter 1.75 inches

Spout lid for hydroflask Standard Mouth water bottle and below brand.

Compatible with: Standard Mouth diameter 1.75 inches

Fits for Hydro Flask 18 21 24 oz

Fits for Simple Modern Ascent Water Bottle 17 20 24 32 64 oz

Fits for Klean Kanteen Classic Bottle 12 18 27 40 64 oz

Fits for Iron Flask 12 16 20 24 32 64 oz

Fits for The Coldest Water Sports Bottle Standard Mouth 21 oz

Kindly remind

NOT for any of your other brand bottle

NoT for narrow mouth water bottles

NOT for Hydroflask Wide Mouth

NOT for Simple Modern Summit

NOT for Klean Kanteen Soda Bottle

NOT for WIDE MOUTH