Are Chilly's Series 2 Bottles dishwasher safe?

No the Chilly's Series 2 Bottles are not suitable for dishwashers. 

We recommend cleaning your bottle after each use with hot soapy water, but please do not leave the bottle to soak. For a very thorough clean please use bicarbonate soda(UK)/baking powder(US) with water. We also sell Chilly's Bottles brushes on our website which are great for cleaning all Chilly's Bottles! 

When not using your bottle, we recommend storing it without the cap on.