Designed for standard 33.8 oz (1 L) shampoo and conditioner bottles, fitting necks with a 28mm (1 inch) diameter and a height of 9-3/4 inches. Made from high-quality materials, ensuring long-lasting durability and reliability for both consumer and professional products. Features a lock-down mechanism that provides a compact look, protects product integrity, and reduces the risk of bacterial contamination by keeping water out.