How to Select the Best Texture for Your Cock Sleeve On the other hand, rubber is another material commonly used in the construction of cock sleeves. While rubber can offer a similar level of flexibility to TPE, it tends to be firmer and less pliable. This can result in a less natural feel and potentially less comfort during use. Furthermore, rubber has a tendency to degrade more quickly over time compared to TPE, which has a reputation for being more durable and long-lasting. Overall, when considering TPE against silicone and rubber, TPE emerges as a strong contender for those prioritising a balance of realism, comfort, and longevity in their cock sleeve selection. When used properly and cleaned regularly, TPE cock sleeves are considered safe for use. It is important to follow safety precautions to prevent any potential risks.Top 10 Lubricants for Cock Sleeves