One of the most requested patterns I've had is this exact pattern. Greek "Lizard" pattern has been used for quite a long time by the Greek Military and is a great looking and also effective pattern. Made of an 80% Cotton 20% Polyester ripstop, these are not only strong as hell, but comfortable as hell. 

Sizes run true to U.S. T-Shirt sizes. Great shirts at a great price.  While Supplies last.