If you're a first time fleshlight user like me, this product will be completely worth your money. 5 stars.**Buy or use a water...WATER based lubricant with it do not use it dry as it's not intended to be used dry**And lubricate often while you use it.The end cap, (left on for suction, taken off or loosened for none) provides a marginally noticeable suction, but noticable nonetheless, and feels amazing both closed and opened, depending on your likes. (I've found leaving the cap open or loose while I enter it, then closing the cap, provides a stronger, longer lasting suction)7 inches can bottom out in it with a steady thrust, 8 inches will fit perfectly. If you're a tad girthier, you may experience more pressure and a snugger fit.Clean up is time consuming and messy, be prepared. Flipping the sleeve inside out could be possible for quicker drying but I wasn't able to do so.Overall I love it and it brought me to completion much sooner than I am accustomed to.