Screw caps, often referred to by the brand name Stelvin, are a modern alternative to traditional cork closures and have become increasingly popular, especially in New World wine regions like Australia and New Zealand. Made of aluminum with a threaded seal, screw caps offer a tight, consistent closure that prevents cork taint (TCA) and reduces the risk of oxidation or spoilage, making them ideal for preserving freshness in white wines, rosés, and youthful reds. A major advantage is their reliability and convenience—they are easy to open, reseal, and ideal for casual or on-the-go settings. However, some critics argue that screw caps may limit the slow, beneficial aging that natural cork allows due to lower oxygen exchange, and traditionalists may view them as less romantic or prestigious. Despite these concerns, many winemakers use high-grade screw caps with controlled oxygen ingress for age-worthy wines, and growing scientific evidence supports their effectiveness in maintaining wine quality over time.