The design is part of Louet's 2014 Fall Collection, and is knit in their Gems Merino Sport in the Teal colorway.
Each of the pieces features a twisted-stitch pattern reminiscent of pine cones. The cowl is shown here in the smaller size, but there's also a longer option you could wear like a scarf, or twist once to double up the warmth around your neck. The mittens also have 2 sizes, with a stockinette palm and gusset thumb.
The tam features the same twisted-stitch pattern, and has a set of pretty decreases on the crown for a little extra flair.
The pattern containing all 3 of these pieces is available as a PDF download through Ravelry (or you can pick it up in print with yarn if your LYS carries Louet products). All pictures are courtesy of/copyright Caro Sheridan.