Flexibole

Use Hygenic's line of Flexibole Mixing Bowls: plaster, stone, investments, and alginates will not stick to these self-cleaning mixing bowls or to their nylon spatulas (not recommended for acrylic mixes). Flexiboles are more flexible than rubber bowls for more efficient mixing. Flexiboles are available in 5 sizes: small, medium, large, extra large, and jumbo.