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Expandable water toys
Expandable water toy
Type of toy made from superabsorbent polymers
Expandable water toys (also grow-in-water toys or grow monsters) are novelty items made from a superabsorbent polymer.
They are toys that expand after putting them into water for anything from a few hours up to several days, depending on size. They shrink in saltwater or when exposed to air. They are made from polymers that can absorb and retain extremely large amounts of a liquid relative to their own mass.[1]
Description
[edit]Water Balz look like marbles, but expand to 57 millimetres (2.2 in),[2] the size of a racquetball, in water.[3]
Orbeez expand to 14 millimetres (0.55 in) in water.[2]
Expandable water toys are also sold in the shapes of other things, such as dinosaurs, sharks, people or mechas from popular anime.
Many of the companies that distribute them are Chinese[4][5] and Dutch trading companies.
History
[edit]The introduction and popularity of these toys has followed the development of superabsorbent polymers.
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