This is a great mid-level bag. I bought it for my 14-year-old son who does MMA and I thought I might have a knock around too (I'm a runner not a fighter).
The delivery was delayed, which left me waiting a whole day for nothing. However, this was the courier, not We R Sports.
When the bag arrived it was in a box that had seen better days. The whole package was light and easy to manoeuvre into the house. The punch bag was undamaged and in good condition.
The base is not solid but foam-lined. This makes sense for kicking. The bag itself is solid compact foam that seems to retain shape. The cover is leather-like and seems durable. The stitching also seems durable.
I filled the base with cat litter. Thank you to the other reviewer who gave this tip! I just placed the bags in the base. It took seven regular sixed bags. This makes it very heavy to move, to locate carefully. Using the lacing to attach the top to the bottom takes time but, apparently, looks well cool.
The bag can take nearly all my son throws at it at the moment. Some combinations knock it over - he sees this more of a challenge than a problem - as do push kicks.
Heavier punches from me can also knock it over. There is still scope to add a bit more weight, but it is fine for now.
As a training bag for a mid-weight teenager, this is great. It serves its purpose for us, as my son has used it frequently over the past fortnight. For heavier punchers/kickers, you will need to consider denser material for the base.