Additional collars and transparent covers are sold separately allowing mothers to seamlessly convert a storage container to a feeding bottle. Simply pair it with a teat flow of your choice (slow/medium/fast/thick feed) to experience the multi-functional, modular benefits of Hegen’s Express-Store-Feed system and enjoy the convenience of a hassle-free conversion when it comes to feeding. 
Directions for Use: 
- To remove transparent cover 
With the Hegen logo on the Collar facing you, push the Transparent Cover backwards (away from you) to open. 
- To assemble teat into collar 
With the built-in anti-colic air vent facing you, place the Collar (with the Hegen logo facing you) over the Teat and pull Teat upwards through the Collar to fit snugly. 
*Air vent in Teat must match with Hegen logo on Collar 
What's included: 
- 1 x Hegen PCTO™ Collar Blue 
- 1 x Hegen PCTO™ Transparent Cover