This is a set of two maternity leggings. They are roomy around the belly and were very helpful! I think they can be used year-round (though they might be a little cold in winter), and they are thin, so they're great for summer too. I had trouble finding good ones, as some were too tight around the belly or too thick... but I finally found some that were easy to use. I personally highly recommend them! I look forward to your purchase if you understand that these are used items. ^_^ M-7