Reliable Material: Our button switch for FreeSip is made of premium plastic, trusted and reliable, and suitable for long-time use. Easy to install and dishwasher safe. Strong Practicality: After long-time use, the original bottle button will occur aging and damage, causing the button switch to lose normal function and making the bottle mouth leak water easily. Our button switch can replace old and broken original bottle button, and help restore original function. Then your water bottle will new . Compatibility: Our replacement buttons are designed for FreeSip stainless steel water bottles, and compatible with FreeSip 19oz 24oz 32oz 40oz and 25oz clear water bottles. Color: Gray Material: Plastic Package Contents: 4 x Button for FreeSip Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.