Icebreaker Sphere Lightweight Short Sleeve Crew Neck Shirt, Moisture Wicking, Cool-Lite Fabric for Summer 53 % Merino Wool, 47% Tencel Lyocell Imported Icebreaker coollite fabric- perfect to cool you in the heat Low Crew neck Set-in sleeves Center back Length59 cmon size M Icebreaker CoolLite fabric- perfect to cool you in the heat Low crew neck Set-in sleeves