Engel 70% Organic Merino Wool 30% Silk Men's T-Shirt Short Sleeved. Made in Germany. 70% Organic Merino Virgin Wool and 30% Silk. The proportion of blending appropriately accentuates the characteristics of the constituent fibers and provides a comfortable and long-lasting wear experience. Organic Certified by GOTS (Global Organic Textile Standard). Made in Germany. Top Size Chart: Size EU 44 - Chest 33 inch; Size EU 46 - Chest 35 inch; Size EU 48 - Chest 38 inch; Size EU 50 - Chest 39 inch; Size EU 52 - Chest 41 inch; Size EU 54 - Chest 42.5 inch; Size EU 56 - Chest 44 inch. Care instructions: Wool is dirt-repellent and regenerates by airing. You should wash your woollen clothing very gently  by hand in lukewarm water. Do not wring or rub wool products, as this could cause felting.