Dr Martens - Jeffrey - Black | Jeffrey is part of Dr Martens Sovereign collection which features high-end quality finishes that would be the envy of many traditionally made rival boots. With premium leathers, finer upper stitching, a leather insole and welt, as well as leather lining as standard, elegance and finery has not compromised quality: gold embossed socks and the edge-trimmed heel loop complete the transformation.