S3A(R) silver antimicrobial technology For odor prevention Lightweight stretch smooth polyester fabric Keeps you cool while providing mobility Built-in thumbholes Optimal for layering Set-in sleeves For flexibility in the field Flatlock seams Ensure all day comfort The Koretec Base Technical Weight Top is your go-to, hardworking first-layer, lightweight hunting apparel. From mid-summer food-plot work to preseason scouting, our exclusive S3A(R) technology helps keep stink down while you get the job done, without breaking the bank.