Comments: It fits tight in the forefoot. The pains so unbearable. I returned them and traded them in for 2 pairs of Vapors. No need to type an essay. Kept it simple and to the point.
From: Tommy, 11/12

Comments: These are not the best pair of Nike's I've worn. They get extremely hot and it is taking a little more than usual to break into them!
From: Arsha, 11/12

Comments: These shoes are very narrow. If your feet are wide don't go for these. I could';t use them, as they were pressing my side and making my big toe numb.
From: Luis, 11/12

Comments: I've worn CB 2.3, 3.3, and now on my second pair of 4.3's. I always swap out the insoles to match my medium arch for the better fit, and I wear Thorlos for the impact and blister protection. The 4.3 doesn't have the plush comfort that the 2.3 has, and it has lacing durability issues that the others didn't have, but it has the best stability of the bunch. While the grip is very good, it has the uncanny ability to break traction in a slow and progressive way so that you have a chance to maintain balance on the full stretch, I never experienced that in any other shoe and that's why I love these.
From: Anon, 9/12

Comments: This is without a doubt one of the best shoes on the market right now. I have played in barricades, the Asics, and Propulse, and this shoe offers the best feel. The torsion system and arch support are a huge plus. I play tennis 4-6 days a week,and these shoes have held up very nicely. I definitely recommend them.
From: Dimitri, 8/12

Comments: I play 4 times per week and I have had these shoes for 3 months and have broken one strap. The lacing system is working fine. You will wear out the soles before you break the lace straps enough to cause actual problems. The main problem with these shoes is that they are narrow. Durability is excellent though. Highly recommended if you have narrow feet!
From: Eric, 8/12

Comments: Good durability on the soles but very narrow. Yeah, the lacing system does break eventually but it doesn't start to affect play until several have gone. If they offered these in E width I'd buy them again hands down.
From: Eric, 8/12

Comments: Buy them if you like Rafa, don't buy them if your a serious tennis player that plays a lot. The lacing system is poorly designed and the loops will dry rot and break well before you will wear out the soles. The shoes do feel nice but when the lace system fails during a match you're going to be more than pissed off. Nike needs to fix this disaster of a design. They may look cool, but they don't perform! Try the new barricades if you want a shoe that is durable.
From: Randy, 8/12

Comments: They needed a little break-in and they felt a bit snug at times on my one wider foot. I totally agree about the short tongue thing, but I like the shoe.
From: Lee, 7/12

Comments: I used these shoes in my most recent tournament and love them. I've always used Babolat shoes but these are for sure the most comfortable shoe I have purchased!
From: Kipper, 7/12

Comments: I got a pair of these, and had to send them back! I have slightly wide feet and I could barely get my feet in them. It felt like they were getting squeezed. I like a little wiggle room on top for the toes and these had absolutely none. I had pressure on all sides of my foot. I've tried Nike Cage 2's and Courtballistec 3.3's, and Asics Resolution 1, 2 & 3's, but the Nike Breathe Free II's are still the best tennis shoe I've ever had.
From: Ron, 7/12

Comments: This is a very good shoe, but it has some fundamental design problems. I came from the great Nike Cage II Breath Free (went through 6 pairs of these babies) and these CB 4.3s have a similar fit and similar cushioning and weight. Minimal break-in. Very sturdy sole. Great support and stability. And good looking! However, there are some design problems in my opinion. First, the tongue is too short. The laces barely stay on the toung and you cant use the last lace hole or they will fall off onto your foot. Just a 1/2 inch more please Nike. Second, there are two seams in the inside of the heel cup where there should be none! This is a no-no for all athletic shoes because of all the rubbing that occurs in this area. Also the material used in the heel area does not look as durable as the great Cage IIs. Third, as others have mentioned the lacing eyes are actually straps. These straps connect on one end to the lace opening in the shoe, and on the other end to the inside insole of the shoe so that they wrap around the sides of your forefoot. This is weird. It doesnt provide any benefit that I can see and the lace system seem vulnerable to various possible failures. Maybe Nike thinks this makes the shoe look better, but I'd prefer functionality. Have only had mine for a few weeks, so no problems with anything yet.
From: Victor, 7/12

Comments: The 4.3 is the best shoe yet. It is comfortable right out of the box. It has good support and cushioning on the heal. In my opinion it is a lot more comfortable than the 3.3. It looks great and plays great. I can't say enough about this great shoe. I highly recommend them and I just ordered my 2nd pair. Great job Nike!
From: Michael, 7/12

Comments: I like these shoes but the eyelets that hold the laces keep on breaking on me. They are just held by a piece of fabric and they are not duable at all. Once they break you can't lace your shoes. Won't buy these again until this is fixed. It didnt happen with the 3.3's.
From: Ryan, 7/12

Comments: I just got the new red colorway that Rafa wore at the French. This is not the same shoe Rafa wears. The tongue is way too short. Look at what Rafa wears. Normal length tongue. I have 2 colorways and both have short tongues. The 4.3's are good but I do like the 2k11 better. The 2k11 fits me better and has the better lacing system and needed no break in. I have not had a problem yet with the lace loops on the the 4.3's but I have over 10 pairs of shoes so they don't get worn as much as if they were my only shoe. This is a problem waiting to happen.
From: RL, 6/12

Comments: Nice looking shoe with good support but I wholeheartedly agree with the comments about the flimsy lacing system. I had one of the loops break after playing about three hours. I would expect Nike to do a better job play-testing its shoes before putting them on the market. Who wants to spend $130 for a pair of shoes and then have to drill a hole (or multiple holes) through the upper to make up for a shoddy lacing system? What is a player supposed to do when the lacing breaks during a match? Who wants the colossal hassle of sending shoes back to TW for replacement? All reasons not to buy this shoe.
From: John, 6/12

Comments:Four major problems still exist in this shoe having not been fixed from the very similar Courtballistec 3.3: 1) There is nowhere near enough padding around the front of the ankle collar so the front inside of both ankles gets bruised. It's very painful and does not improve after break-in. 2) The "loop" lacing system is already starting to fray. Being identical to the 3.3s, then they do break the shoes become unwearable. Use proper holes like all other companies on your heavy duty tennis shoe. 3) The tongue is too short. 4) The laces are way too short. If the last two points seem petty, they are not when you are spending $130 yet Nike is nickle and diming you. Overall the shoes are solid, with lower weight than the 3.3, better ventilation and still hard wearing but I will be going with Adidas Barricade 7s for next year if these things aren't improved for the CB5.3. The CB 2.3 had none of the above 4 problems which sprout from cheapness and really do make what could have been another 5-Star Nike shoe into a 3- star one.
From: Nicko, 5/12

Comments: This shoe is a great shoe. I had upgraded from the 3.3's, and they are a major breakthrough. There is almost no break in required, and it is noticeably lighter. Like the 3.3's, the loops holding the laces still break, so try not to lace them too tight. Also, near the drag on 2X, the cloth holding the sole to the drag on 2X ripped. Got them sent in today, and getting a new pair. they are very durable, like the 3.3's, and very stylish. The part near the AirMax wears out pretty fast, so dont drag your feet. But all in all, they are very good shoes, with good durability. Just a few flaws at the part where the shoe bends (drag on 2X) and the laces. Good Work, Nike!
From: Anon, 5/12

Comments: This is a good shoe, but there is a MAJOR FLAW. As the previous poster stated, the loops that the laces go through break which is what allows you to tighten the laces. This is very disappointing because otherwise it's a good shoe. Nike, didn't you do any testing?
From: George, 5/12

Comments: I really like these shoes, but they have one major flaw regarding durability. The loops that the laces go through are cheap fabric and they start to break after a very short period. I have a narrow foot and I pull the laces tight. After only 1 month the first lace loop broke and after 2 months, 4 had broken. I had to use a drill and make lace holes for the laces to go through. One of the reasons I bought these shoes is that Nadal is very tough on his shoes and he pulls his laces very tight. I figured they would hold up, but they don't.
From: Marcus, 4/12