This is the FeatherWing Doubler - a prototyping add-on and more for all Feather boards. This is similar to our FeatherWing Proto except there are two! The magic of the Doubler comes when stacking a Feather and another board on top of the Doubler so you can work with both boards simultaneously side-b...

Includes everything needed to replace your optical drive with a second drive or Solid State Drive. Add up to an additional terabyte of internal storage with the OWC Data Doubler. First install any 9.5mm-high 2.5in SATA drive into the Data Doubler frame... and then install the entire assembly into a...

Thirsties Organic Cotton Doublers and Stay Dry Organic Cotton Doublers are the answer to parents' quest for added protection! Looking to boost absorbency for a heavy wetter or nighttime diapering? Try our Organic Cotton Doublers comprised of four soft, absorbent layers of 100% GOTS certified organic...