If you're looking for a fantastic semi-arid/arid pattern, this is one of the best in my opinion. Used by the Turkish Jarndarma, these 2 pocket lightweight field shirts are made for hot environments and absolute comfort. These are not only practical in a camouflage sense, but actually look really cool for everyday wear, and are lightweight enough to be worn in just about any setting.
These are legit surplus, and although they're in excellent condition, these may be slightly used/worn.