Donut stretches to fit most pumps 3 ¼" donut with 1 ¼" opening

A clear supple sleeve that helps cushion and protect the penis while ensuring an airtight seal during pumping sessions, the Universal Pump Donut Sleeve adds comfort and even more effectiveness to enhancement.

Slipping easily over most pump cylinder openings, the Sleeve features a snug interior and lots of cushioning. Compatible with any favourite water based lubricant. Fits standard pump sizes.