How do I clean my Tommee Tippee travel bottle?

Tommee Tippee recommends to clean the insulated flask periodically. The best results are obtained using a mixture of water and bicarbonate of soda or washing up liquid. Rinse thoroughly afterwards. Unfortunately the insulated flask is not suitable for a dishwasher.
 
To clean the beaker; wash in warm soapy water, rinsing in clean water. The beaker is dishwasher safe.