A wearable device comprises a tourniquet configured to occlude blood flow in an artery of a wearer. The tourniquet comprises at least one base plate； two anchor points connected to one of the at least one base plate and configured to anchor a first end of one of two laces； a tunnel strap comprising two lace guides connected to a first end of the tunnel strap, each configured to guide one of the two laces； and a tightening mechanism connected to one of the at least one base plate and comprising a spool configured to accept a second end of each of the two laces, and a knob configured for manually winding a portion of at least one of the two laces onto the spool. The wearable device comprises a wearable item quick release connector connected to the tourniquet, and configured to removably connect to a wearable item.
