By using grafting (also known as the Kitchener stitch), you can join two knitted pieces. Grafting stitches is a way to mock knitting by using a tapestry needle, and it creates a very stretchy and almost invisible join.
How to Knit the BEE STITCH by Studio Knit :: This is a Brioche knit which means it& light, fluffy, has great dimension. The BEE STITCH requires that you cast on an ODD number of stitches. = knit 1 below