Unlike previous reviews I am delighted with this bar. It was made very clear to me in the Belfast store that the bar was 28mm and designed to exclusively fit their own branded weights. This suits me fine. I'm a novice and want a quality set which I can build up over time for not too much money. I was attracted to the shorter length as I am female and find the longest Olympic style bars unwieldy at the minute. Be aware that this bar only weighs 10kg though.
Unfortunately I didn't read the reviews before I went and bought this bar. Same problem as the other guys. The diameter of the plate mounts is about 29mm so standard so standard plates will not fit. I will be taking it back and not making the same mistake twice buy buying from Decathlon when it comes to bars. It's a shame too because it is a really nice bar.