I think your boys would definitely fit. I have the same version, only I think my cover is a different fabric. My girls are 11-12 and 9 lbs, and they have plenty of room. They both have room to lay down, and they even have enough room to sit next to each other to look out the window. I think you'll really like it. The angle is kind of odd on this since I took it from the front seat.
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