We buy this and two other similar packs in size 3T. Our son is 2.5 years old, about 38 inches tall and 28 pounds - he is quite skinny, when we started potty training and switched him to briefs we put his old 18 month old shorts back on to keep him from sagging . We bought 3T. Size because we didn't want the panties to be tight and tight. The looser waist makes it easier for him to manipulate when using the potty. It's also less like a diaper, which was helpful for the potty-training method you fall. It's also nice that he can grow into her for a while. The patterns are very cute and a wide variety helps us get him interested in dressing up like a big boy! We also bought 3 packs of Mickey Mouse and 3 packs of "Thomas Chu Chu". Sorry I can't post a photo to illustrate the fit, but you can't be too careful these days.
Comfortable & Practical City Threads Underwear: Sensitive-Friendly Boys' Clothing
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