Derbiedersinn Breast Pump Bag, Compatible with Spectra Pumps, Insulated Carrying Case with Cooler for Milk Storage, Travel, Work, Daycare，Pink

so i used this one for the pump and pump parts: https://a.co/d/03gsvNm8 and then this one for the frozen milk id bring and any fresh milk i pumped! https://a.co/d/00aJY3oW i did bring LOTS of frozen milk because i was weaning, so you could definitely make a smaller cooler work if youre mostly giving freshly pumped milk. this cooler was great because of all the pockets for bottles, pump wipes, bags, etc!