Bag'in is primarily made for outdoor furniture, but you are guaranteed to find more outdoor items to store in Bag'in. You can, for example, make space for the grill, flower boxes and pots, sports equipment, garden tools or other things that can withstand being outside in the winter. You may therefore want to increase the size if you are unsure.
At the same time, you should not choose a Bag’in that’s too big. This increases the risk of dents forming where rain and snow can accumulate. Remember to build the structure with a tent top so that water can drain off, and use the integrated straps to tighten the top fabric.