Icebreaker introduces a variation to their Superfine line (190 g/m2) of merino wool garments with the Elite Tee (men and women) and Track Singlet (women only). These shirts have backs of highly breathable eyelet Superfine fabric. Icebreaker claims that the eyelet fabric is 23% more air permeable than regular Superfine fabric. These shirts will be available in the Spring. We’re eager to see if the eyelet fabric backs are an advantage for sweaty backed backpackers.