Swell Polymer Rainbow Spheres - Multicolor Play & Pretend This mouse is well-prepared for

This mouse is well-prepared for a hiking trip in the wild nature

disoriented

9 thick card stickers

read the book

Skateboard Construction: 7-Ply Maple

Swell Polymer Rainbow Spheres - Multicolor Play & Pretend This mouse is well-prepared forThese 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. Swell! All in a packed in a test tube and peekaboo 5.