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Material: Silexpan
Silexpan sex toys are made with several materials: their surface is silicone, and inside, their core is made of a soft material with an unknown composition.
Only silicone touches the body, and silicone is non-porous, which makes Silexpan body-safe, however quite cheap. It’s a patented material, but several brands use it.
Silexpan has a soft texture, that reminds of a stress relief ball, and softens further when warmed. When bent or twisted, it tends to keep its shape.