Pro Impact Boxing Speedbag Replacement Bladders – Latex Bladders for Regular Speedbags, Single End Punch Balls & Double End Speedbags – Durable, High-Performance, Easy to Inflate

Although tricky to assemble (that is getting the nib in the right location) it works just fine. Testimonial will come with years of speed bag boxing fun.

Was a bit tough to get it in, but it fits the speed bag and works fine.

Product works and I use it almost everyday for over a month. I put it in at the gym I go to so many people have used it and it's still holding up. It does have an odd feel to it but it does what it's supposed to.

Excellent replacement for the broken bladder in my speedbag, easy to remove and replace, excellent quality rubber (not thin latex) speedbag replacement!

The price was inexpensive and it takes time and care to get it in properly once in with the needle for putting air in find the valve and insert the needle and pump up slowly, and the bag is tied up, the valve will shoot through the opening and fill it up and use it the valve will not go in the bag and have fun with your speed bag!

Bought to replace the bladder in my xs title quick tech bag. The original bladder leaked and didn’t hold a good shape for the bag. This bladder made a night and day difference. Holds air great and made the shape of my bag more uniform, and also made it quicker.

there are no sizes on the bladders,so I took a chance and guessed..wrong

I bought the "Regular Small 5x7" bladder. I received the bladder punctually, installed it in my Cleto Reyes mini/extra small speed bag on Friday (December 9), and worked the bag in the mornings over the weekend before the bladder began to refuse to hold any air by the end of my Sunday session. I do not treat my speed bags like heavy bags; I do not do upper body exercises; my upper body is not very muscular; I only hit the bag at most 40 minutes each day; and yet this bladder failed on me after no more than 80 minutes of time in use. (I often skip several songs on my MP3 player before I find a good one to hit the speed bag to, so saying that this speed bag endured 80 minutes of use is gratuitous.) This bladder was smaller than the ones I received with my speed bag, which, in retrospect, I find somewhat odd because my speed bag was marketed either as a 5x7 bag or for 5x7 bladders--something like that. I figured that if my speed bag is essentially a 5x7 bag, then a 5x7 bladder ought to be ideal. However, this bladder did not fill up my speed bag as the other bladders that I have used had. I tried inflating this bladder to 4-5 psi to try emulating, as much as possible, the firmness that the bag previously had with other bladders. I kept in mind that over-inflating the bladder would be detrimental, which is why I did not push the bladder beyond 5 psi, but maybe 4-5 psi was too much and maybe that was why this bladder failed on me so easily. This was the smallest bladder I have ever seen, so maybe I should not have trusted it to hold 4-5 psi. Nonetheless, I am annoyed that I have to buy another speed bag for my speed bag workouts next weekend. I admit that it might even be my fault that the bladder failed. I have tried to be honest and informative here. However, I am still annoyed and want to warn others if this bladder indeed is the piece of trash that I believe it is.