Just like other Sportful products, these gloves seem to have good production quality and quality construction materials.
However the XLs were so small I couldn't even get them over my knuckles without the prospect of ripping the seams. To get the right size I would recommend going 2 full sizes up. If you are a M in other brands the XLs would probably be perfect.
From a QC standpoint there is a great amount of padding on the meat of your thumb, and across the top of the palm. There is good breathable material accross the palm area where there isn't any contact with the bars, and across the entire back of the hand.
For someone looking for a good gravel glove, without sweating out their hands this would be a great option! Just be wary on the sizing.