We have these slim jeans in every color. For some reason the Mongo color fits looser or slightly larger than the rest. However, they still stay fitted to my slender son's waist. He loves that there is an elastic band at the back of the waist that makes it easy to pull the jeans up/down if you're in a hurry. Even though he is 6 years old, he can easily button and close his jeans himself.
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