I've only given 3 stars as a whole experience with buying from zero one.
Important-if your a size 28"-34" don't waste your postage like I did. It's very big for 36"+ people. I did tell zero one that the sizes were not clear on the site (one size fits all) but they appear to have not amended the description. No tracking number as promised either so I wasted a day off at home. The vest might be good if it fits but the service was very poor.
