This is my first experience with a pump and had no idea what to expect. Since I’ve been pleased with the quality of other products I’ve purchased, and the “can’t go wrong” price point, I figured why not give it a try. After a few laps, I can say that I definitely see positive results in size and staying hard longer. A word of advice: Start slow – don’t over-do it. The suction power is intense (even at the lowest level) and can catch you by surprise. Work your way up until you find a comfortable level. Thankfully, the release value works effectively and quickly. The two included sleeves provide different results and sensations. The product is also smartly designed. Easy to hold, not overly large, quiet as hell and disassembles easily for thorough cleaning. I like that an extra O-ring is included which someday will prolong the life of the product. If you need a little extra help now and then, this is the pump you want to have. Trust me, your partner will enjoy watching you use it and the results.