The Damson Madder Aggie Knit Vest features a striking argyle pattern, branded buttons, and signature DM embroidery, designed for effortless layering across seasons. The Damson Madder Aggie Knit Vest features a striking argyle pattern, branded buttons, and signature DM embroidery, designed for effortless layering across seasons. Damson Madder was born out of a desire to make exciting designs, responsibly. From their North London studio, they craft playful, ultra-feminine designs meant to be worn again, and again (and again!). Think maximal style, minimal impact.