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Instead, you’ll want to look for non-porous materials, such as silicone, ABS plastic, metal, glass, acrylic, and sealed wood. For squirters, people who like to use a lot of lube, or anyone else who digs messy sex, the Liberator Throw is here to save your bed sheets. It's velvety-soft on the outside, for comfort, but has a moisture-resistant barrier on the inside that prevents moisture from seeping through to your bed/floor/etc. As a result, I often find myself having to reach in and intervene, which kind of kills the "lean back and enjoy"