The tabs on the sides of the lids of MSR Alpine Pot Set serve multiple purposes. Firstly, they allow for easy lifting of the lid using a pot lifter or any other tool that can fit through the tabs. Secondly, the tabs help in securing the lid onto the pot, preventing it from sliding or falling off during cooking or transport. Lastly, the tabs are designed to work with MSR's Talon pot handle, which can be quickly and securely attached to the pot for easier handling. The Talon handle also folds to lock nested sets together, making it more compact for storage and transport.