Two dresses in one; Damson Madder's Becca has removable puff sleeves. It's made from 100% cotton, too. Two dresses in one; Damson Madder's Becca has removable puff sleeves. It's made from 100% cotton, too. 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.