The Sew Stack is made of soft touch, flexible material that is latex free. This set includes 2 bobbin trays and a lid.
Each tray is designed to hold 40 bobbins with room to get your fingers in to grab each bobbin. I 'hacked' my Sew Stack and it now holds more bobbins and works better for me. Watch the video to see how. NOTE: If you hack your Sew Stack, promise to be careful with the razor knife!