Swell Polymer Rainbow Spheres- Science of Polymers 11yr Easy click & close lid

Easy click & close lid and you can add a Suzy stainless steel bottle to this lunchbox

Product dimensions: Total drop - 10

Main Materials:Paper Board

it provides warmth

This Music Box Kit will have the musician in your life giddy with childhood excitement

Swell Polymer Rainbow Spheres- Science of Polymers 11yr Easy click & close lidThese curious growing spheres are made from a chemical known as a super absorbent polymer (or SAP). SAPs are amazing materials. They are long chains of molecules that join together in a net like pattern. Water is pulled in through the holes of the net. then the molecule chains soak up tremendous amounts of water. When the molecules absorb water, they swell and soften and transform into a hydrogel water bead. Swell! All in a packed in a test tube and