Tenga Rolling Head Cup is a masturbator with a unique shape. It has a movable spiral that can be bent freely. The pressure inside can be adjusted with the opening on the top of the product. A network of stimulating tabs inside the sleeve. Intense sensations. Internal pressure control. Easy to maintain hygiene. Flexible spiral . Materials: Insert Sleeve: Thermoplastic Elastomer (TPE) Casing: PE Size (D × W × H inches): 2.72 × 2.72 × 6.10 Insertion Length (inches): 5.80 Insertion Width (inches): 1.80