Spun with a yarn blend of fine Merino wool and rayon from bamboo and featuring an ultra-light cushion sole, arch support, and a seamless toe closure, the Field Flower does it all. Moderate graduated compression (15-20 mmHG) is designed to improve circulation and reduce moderate swelling.deal for minor to moderate varicose veins, plantar fasciitis pain, exercise and recovery, flying and travel, prolonged sitting and standing, and pregnancy.