I have the Medela PISA metro bag. After hauling it to and from work for a year with #1 I should've known it wouldn't make through another year for #2- the strap broke. I need a new bag and it needs to fit the pump, that Medela cooler that holds 4 bottles, the pump parts plus a nursing cover, wipes, and hands free bra. None of my regular tote bags are this big. What do you use?