A compression device, useful for applying circumferential compression to an object, for example, as a tourniquet to occlude blood flow in a hemorrhaging extremity, is provided. The device includes a buckle assembly, first and second guidance slides, a connecting member between the first and second guidance slides, and a strap. Each end of the strap is anchored to a guidance slide. From each of the anchored ends, the strap passes through the buckle assembly, forming outer segments. The strap then returns along respective insides of the outer segments and through the guidance slides, forming inner segments. The buckle assembly, inner segments and connecting member form a loop for placing about an object, an inner circumference of the loop being adjustable by pulling on a portion of the strap located along the outside of the connecting member and between the two guidance slides to tighten the loop around the object.