Comments: Excellent shoe! I had to go up a half shoe size from the Propulse 3s though, as they are thinner through the toe box. After doing that, I feel these are the best shoes I have ever worn. I feel comfortable and explosive on the court. No idea about the durability right now, but the feel is excellent.
From: Matt, 5/13

Comments: These shoe are narrow in my opinion. I play highschool tennis and after a long day at the district tournament (which i won) my feet were killing me. These shoes are more durable than the Propulse 3s, but I thought the 3s were a better shoe!
From: Chris, 5/13

Comments: This was an impulse buy for me as I never researched the specs or even read any of the reviews prior. After only a few minutes on the court, these shoes felt amazing comfortable, yet stable. They felt snug yet just enough width and toe room for easy flexing. The shoe is loaded with tennis technology that actually makes you feel quicker as well. Despite the horrible cosmetics (in my opinion), this shoe pass my Goldie Locks test.
From: Larry, 4/13

Comments: These shoes are good, for me, they are a big improvement over the Propulse 3. They are stiffer and thinner in the toe box. The upper is not as soft, which is good because that was one of the things that made me crazy about the Propulse 3. These are comfortable right out of the box and become more comfortable as you break them in. I've got about 12 hours of match play in them and they are holding up well. The straps feel a little flimsy but they still work. I've played on clay and hard courts and they handle well on both.
From: Kyle, 3/13

Comments: So an update to my 2/13 comments, after giving them about a month of solid play my feet are hating life. I loved the older Propulse, great fit right out of the box and the footbelt system was great for locking your foot in. The new 4's have been noticeably narrowed in the toe box and are causing serious pain in my toes, even other people who saw them on me commented on how narrow they looked. If you have narrow feet these might work for you but if you have a wider toe beware. So the search is on for a new shoe.
From: Mark, 3/13

Comments: I play highschool tennis and I have had these since the day they came out. I'll tell you now I will not be getting these again. They are already torn up and worn on the bottom. They dont fit as well as the Propulse 3, and I've had nothing but problems from these shoes. The next shoe I'm going to get will be the Nike Zoom Vapor.
From: Ryan, 3/13

Comments: Premium cosmetics. Snug fit and excellent support. Improved outsoles from previous version. Outsole treading patten looks and feels like patent certified. Better uppers, less elasticity resulting in more of a glove-like feel. Thicker insoles for better cushioning. Best Propulse so far. Clearly, Babolat has spent some time in their labs to create a new iteration that simply looks, feels, and plays like no other.
From: Dave, 3/13

Comments: I got these shoes in the mail yesterday and tried them out for my 4.0 practice. I played 2 sets of doubles and 2 of singles. The shoes felt good right out of the box and slightly lighter/faster compared to my Barricades. Although they felt good, I am worried about the durability. I am hard on shoes which is why I wanted to try something new since the Barricade 7s do not last as long as the 6s. These new shoes showed some serious signs of wear on the soles after only one use. I will be surprised if they last 2 months, but I'll give them a shot and see what happens.
From: Brandon, 3/13

Comments: I really like these shoes! Compared to the propulse 3 (P3) that I still have, I noticed that the shoe felt a bit more comfortable out of the box with a some more cushioning underneath the forefoot. There's also more cushioning/fabric on top of the forefoot which prevented the blistering that I get on top of my fourth toe with the P3's (circumvented with some preventative taping). I'm an advanced player and as primarily a defensive baseliner, I found the shoes offered the same incredible lateral and forward/backward stability as the P3's but with more grip and less sliding/slippage on plexicushion hard court. I felt like I could turn on a dime without slipping or rolling an ankle. The shoe had no problem accommodating my EE wide feet as well as my ankle braces after a short 15 min break-in period. Length-wise was the same as the P3s. My only criticism is that the velcro strap on top of the foot is thinner and shorter compared to the previous model and I was only able to attaches half an inch of velcro onto itself. I was afraid it would break or become loose during play but it never did. I can't yet judge the durability of these shoes but I have a feeling the outsole is like a sports tire and wears quickly but has excellent traction. I normally play 2hrs of singles 3-4 times a week and would definitely buy them again if they can last me 3 months.
From: Timothy, 3/13

Comments: So I just got these yesterday from Babolat as a replacement for a pair of Propulse 3's that I wore out in less than 3 months. Initial reactions is that they feel considerably stiffer and narrower in the toe box than the preveious model. Unlike the 3's, these are going to require a break in period. Also the velcro straps on the foot belt system feel lighter weight, time will tell if they hold up.
From: Mark, 2/13

Comments: These are great shoes. There was no break-in period required. These shoes are little bit stiffer than the Propulse 3, but they provide more support and are just as comfortable. I felt very light on my feet and explosive on the court. I am very happy with the purchase.
From: Arnie, 2/13