The mini one size actually gets a bit smaller than the XS, rise-wise. Above is the XS (brown w/blue hibiscus print) vs the mini one size (pink) on the medium setting.
You can see that the XS isn’t much smaller (rise-wise) than the Happy Heinys One Size, while the mini one size is a bit smaller. However, the XS is definitely narrower through the crotch.
Here’s the smallest setting of the mini one size (pink) folded and stretched, vs the XS pocket (brown w/blue hibiscus.)
Both have the same velcro closures, but the front panel of the XS (on top in the right photo) is a bit smaller/narrower than the mini one size.
The XS doesn’t have encased leg elastic, which is supposed to be more gentle.
They both have the same inner as well. I think the XS is a good bit narrower through the middle than the mini one size, so I’d expect it to be less bulky on tiny babies. Unfortunately, I didn’t buy the insert for either one, so I don’t know how they compare!
Once on my “model” you can’t tell too much of a difference. Again, I think the rise on the mini one size (pink) is a bit lower than the XS, but the XS is a little narrower.
The mini one size diaper retails for $17.95 (with two inserts), and will take you from the newborn stage, until the one-size diapers fit (the largest size of the mini is very similar to the smallest size of the o/s…see the mini one size review for photos.) Happy Heinys’ Weight range on these is 4-15 pounds.
The XS pocket diaper retails for $18.95 (with one insert), and thus far, I haven’t been able to find an estimated weight range for them. They do have the benefit of being a little bit narrower, and the un-encased leg elastic is supposed to be gentler (I prefer encased.)
For $1 less, the mini-one size gets you an additional insert, and more sizing flexibility, so it seems like a “no-brainer” to me.
What do you think?
FTC compliance: I purchased the above products myself, with a coupon code. I was not compensated for this post and all opinions are my own.