Water crystal gel or water beads or gel beads is any gel which absorbs and contains a large amount of water. Water gel is usually in spherical form and composed of a water-absorbing superabsorbent polymer (SAP, also known as slush powder in dry form) such as a polyacrylamide (frequently sodium polyacrylate).

Uses

Water gels are used for:

• Supplying water to small animals as an alternative to supplying water in a dish. Some small animals tend to fall into dishes of water and drown.^{[citation needed]}
• Watering or potting plants.^[1]
• In vases of cut flowers
• Use in gardens to save water.
• Used as ammunition for gel blaster toy guns. Usually came in 7–8 mm when full size.
• Colorful decorations or artificial snow.^[2]
• In a dry state as absorbent filler inside disposable diapers and sanitary napkins.
• Proposed for controlling or containing floods.^[3]