Cupholder Friendly: Both 30oz and 24oz fit most cupholders Folding Loop Handle: Comfort grip coating. Grab and go with just a finger Contoured Straw: Say goodbye to mouth wrinkles and hello to unmatched flow rate. Not intended for carbonated liquids. Clean-Lock Covered Lid: Keep germs out and water in. Click the button up/down to lock or unlock Soft Landings: Silicone base for quiet sitting. Dishwasher safe