SLIMYSAND by Horizon Group USA vs NATIONAL GEOGRAPHIC Mega Slime Kit & Putty Lab

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 $8 and $30 budget ranges instead.

The SLIMYSAND by Horizon Group USA hasn't managed to get enough recognition from sources that do high-quality hands-on testing and therefore didn't make it into any relevant roundups. That, by itself, makes it difficult to recommend.

Taking a look at the NATIONAL GEOGRAPHIC Mega Slime Kit & Putty Lab, it got featured in roundups from two reliable sources that conduct their own testing - BabyGearLab and The Spruce - but it fell short of earning a top spot in either.

As a last step, we wanted to do a head-to-head SLIMYSAND by Horizon Group USA vs. NATIONAL GEOGRAPHIC Mega Slime Kit & Putty Lab comparison of their review performance but, unfortunately, weren't able to find any review ratings on either product.