Use a takeaway cup holder as a template for the foam base of the cosy.
Pin the foam template onto a sheet of felt and cut around, leaving about 2cm gap. Repeat a second time.
Draw a heart on paper and use as a template. Cut two hearts from the felt.
Pin the shapes in place- remember to 'reverse' the other side so both sides match.
Place the foam in between the two felts and pin the edges together, ready to sew.
Cut a hair band in half and sew it's ends together. Slide in between the felt/foam and stitch in.
Stitch around the entire piece using embroidery thread- this creates a nice complimentary chunky stitch look.
Wrap the cosy around a takeaway cup, marking a dot in the center of where the hair band loop falls. Sew a button onto this spot and repeat for the other side.