Pipedream uses only the best TPE for this stroking sleeve to ensure a soft and stretchy feel. The moment you slip inside it you will meet the tiny ticklers that line its inner walls. If that is not enough on the outside there is a slot for a bullet vibe to send you rocking to your climax. Forget about batteries with this one and just slip it into any USB port so the fun can begin. The bullet length is 2.25 inches and it is .5 inches wide. The Sleeve length is 5.5" and it stretches to 1.75".