Hippih Pillow Inserts vs Pillowflex Synthetic Down Pillow Insert for Sham Aka Faux/Alternative (18 Inch by 18 Inch)

We couldn't find enough data on either product to be able to come to any reliable conclusions. We highly recommend that you take a look at some other options in the $17 and $25 budget ranges instead.

The Hippih Pillow Inserts hasn't managed to perform well enough to earn a place in any Pillow roundups conducted by sources that do their own, high-quality, hands-on testing. That alone makes it a hard product to recommend.

Moving on to the Pillowflex Synthetic Down Pillow Insert for Sham Aka Faux/Alternative (18 Inch by 18 Inch): no sources that perform reliable and objective hands-on testing have included it in their Pillow roundups, which usually means that a product doesn't make for a good purchase.

As a last step, we wanted to do a head-to-head Hippih Pillow Inserts vs. Pillowflex Synthetic Down Pillow Insert for Sham Aka Faux/Alternative (18 Inch by 18 Inch) comparison of their review performance but, unfortunately, weren't able to find any review ratings on either product.