The Wayalnd scarf is knit in two halves and joined by kitchener stich. Using a striping yarn adds a rainbow of ripples. A great way to try your hand at knitting a ripple stitch and grafting.
I knit my sample using Noro Cash Iroha ( a lovely yarn that is now retired). A great alternative would be the new Noro Silk Garden Solo. A rainbow of possibilities await!