Dripex Adult Freestanding Punching Bag

I bought this bag a couple years ago. After one year of use the black plastic at the base of the bag cracked and the stand became unusable. I'm not very powerful and don't weigh much so I was shocked and saddened to see that happen. I contacted customer service and they sent me a replacement within a couple days with no hassle or back and forth. They were great, responsive and friendly.

well, fast forward another year and it has happened again! Maybe I just got two defective ones? but all that to say that the vendor is great and responsive and even though I'm beyond the warranty they are still willing to help. Overall a good product and even better vendor! Despite the issues I've encountered I'd consider buying one of their products in future since they are so helpful and that's rare these days.

I have been already using this product for a while, here some tips:

Decide where to put it before filling sand in the base. As it would be difficult to move after full filled. Some people said it was difficult to fill the base with sand but it’s easy for me. I cut an cola bottle then put the top of the bottle in the hole, so it’s very easy to fill the sand.

Suction good at solid and wood floor but still 3 bags of sand to avoid it moving around.

The bag is softer than my hanging punching bag, wouldn’t feeling hours without punching training gloves, but I still wearing normal training gloves to avoid damage my hands.

I did knock it with strikes, I think it was good for beginners and intermediates.

Been pleasantly impressed by this unit. I only weigh 10 stone but even without the suction pads this unit is very hard to tip over, with the suction pads it's pretty much solid. You do need to make sure the pads and ground it sits on are very clean or they simply won't stick, standard though.
The bag itself is quite hard and gives really good feedback to strikes. It feels very durable though I did tape up the seams prior to using just for added strength. It is hard enough though that you need to be pretty accurate with your strikes - I've clipped the bag a few times and hurt my wrist as a result, though I use MMA gloves so not as much wrist support as boxing gloves.
The 4 springs at the base of the bag seem to do an excellent job. The bag doesn't swing as much as I might expect from a free standing unit, though I would advise checking the tightness on the bolts as after a few uses I noticed a couple of the bolts were lose. Applied some thread locker to the bolts and retightened.
For the bolts that attach the bag to the base, the manual recommends to use a torque wrench but doesn't specify a torque.. I've tightened mine to 5-7nm and that seems to work well.
Filling the bag up is also fairly easy with a nice wide hole, approx 37mm, and a funnel. Initially filled it with water but the sloshing around causes quite a slow rebound so replaced it with sand and seems much better. With regard to the sand, it took me 40 minutes to fill it with 45kg of sand, and that was with some breaks so not too bad. I got play pit sand, came fairly dry and was nice and cheap. The only criticism I have of the hole is it's been drilled part way down the base unit making it impossible to fill the unit completely. It looks as though there was an existing hole at the top that seems to have been filled with hot glue, kinda wish they'd kept this the hole and not drilled a 2nd one. I'd estimate I'd get 60kg max sand in there.
Overall very impressed and happy with the unit and would recommend it to anyone looking for a heavy bag. I have only used it a handful of times so suppose time will tell on its durability but seems great so far. If you're concerned about its swing, there are some great YouTube videos of this bag that shows it can really take a beating