You don’t need a bra to use it, and the neoprene helps compress your breasts to improve output and it’s hands free. 2 sizes too! Just have to be careful the Velcro doesn’t grab your clothing because it will snag. https://pumpstrap.com/

The pumpables genie advanced is a phenomenal hands free pump that gets similar output to a spectra bc it’s a corded motor. It also has a programmable button, just record your settings then push the play button and have hands free for anything else (uses flanges liquid kits are comfy and max output too), it clips on a waistband. It can be hacked with in bra cups but those really stink for output.

I actually don’t feel nursing is sustainable to do exclusively for most women unless they cosleep (not very safe) or can function + not become mentally unwell on very little sleep already.