The Damson Madder Ruched Kidney Bag features an embroidered design and ruched frill strap with a tie-up bow design. The Damson Madder Ruched Kidney Bag features an embroidered design and ruched frill strap with a tie-up bow design. 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.