Work & Pumping

Sooo this is my 3rd baby but 12 years apart from my last. Breastfeeding this time has been completely different and it’s the longest I’ve done it. Babes is almost 5 months & only wants boobie milk. I am an ICU nurse and back to work so I have the M9 and I’m loving it. But I’m wondering if buying the Momcozy cooler bottle to put my pumped milk in is worth buying? It’s just a little expensive. Any thoughts from those who have purchased it would be awesome!