The 18 to 24 months is more like a 2t or even 3tPretty, classy herringbone patternGood elastic at waistbandThe only thing is, it’s not slim fit so I had to take to seamstress to taper themI must start off saying that I absolutely LOVE this brand. The quality and durability of their clothing keeps me coming back...not to mention super stylish! I will say the pants do fit like a loose trouser vs a skinny straight up and down pant (if that makes any sense). The elastic in the waist was a big help for me as my son has a small waist.Nice quality but they run a little long. I ordered my son’s normal size and had to hem them to fit.The pants seemed very comfortable for our two year old. He wore them to his aunt's wedding and they stayed up and he had no complaints. He looked positively adorable in the outfit which included the matching vest. He also wore the outfit a second time to "Holiday Dress Up Day" at day care and was a hit. That's one cool looking toddler!Loved these! Well made and fit perfect! The material was really nice and the company was really nice and wrote me back right away when I had questions about them!True to size, nice look and material! I have been very happy with all Hope and Henry items I have purchased for my boys.High quality super soft and incredibly adorable. Will definitely purchase more fromThis brand in the future.