The upper part of the vest where usually a disturbing pressure is felt, the material has been doubled (2.2 instead of 1.1 mm) which makes it super comfortable. ahg-Shooting Vest with 2-way-zipper for kneeling position.cold winner vest with Warmth-regulating underwear.material: 48,15 % Polyester 48,15 % Thermolite 3,7 % LycraContact us at 70822-33324, if the product is in pre-order status.