I have only 1 romper from Tykables. Imo it's not at all comfortable and it really doesn't hold the diaper in place like their snappies.
The uncomfortable part is the fact that is has legs like boxer briefs and too any snaps to close it up.
I've always worn tighty whities and the snappies give me more that feeling of wearing my regular underwear. I tried boxer briefs in the past and didn't like the way they rode up my legs and bunched up. The same thing happened with the rompers.
I only buy Tykables snappies because they are tried and true. I had to go thru the trial and error till I finally got the right size and now I can just order without the guess work. You might have to do the same.
If it's too loose order another one down a size. If that turns out to be too small then you're basically in between sizes.
Bear in mind that Tykables snappies have 5% spandex woven into the fabric so they have a little stretch too them. So the size down should work. But do not wash in hot water and dry with high heat because they will shrink and one thing I have learned is that you can wear it after it shrinks, but it'll be tight and not give as you wear it. It's like wearing a tight fitting shirt.
I'm up to 27 snappies and my last purchases have been the new hoodies, 2 baby blue and a baby pink.
These are so comfortable. It's like having a onsie sewn inside of an over shirt.