For isothermal bottle 260ml, 500ml and 600mlScrew-on infuser, compatible with the infuser lid for isothermal bottles.

Stainless steel.
Usage tips:

Step 1 :
Fill the infuser however you like: loose tea, infusion, purifying bamboo charcoal.

2nd step:Screw the infuser onto the screw cap.

Step 3:
Fill the bottle with hot or cold water. After screwing the infuser back onto the cap, immerse it in water and close the bottle. Infuse according to your tasting preferences!
Use and Washing:
Do not place in the dishwasher, microwave, oven or freezer.
Wash before each use.
Wash with warm water and soap and/or baking soda. Do not use abrasive materials.
Don't let it soak.