Arch support improves foot and leg alignment, improves comfort, and helps relieve pressure and discomfort caused by flat feet (pronation), bunions, arthritis, plantar fasciitis (heel pain and heel spurs), Achilles tendonitis are beneficial. Durable foam base provides long-lasting support and comfort while walking, running and hiking. This fabric also keeps your feet dry. foot orthotics are more supportive than thick pad insoles and won't change the way the shoe fits. Provides moderate control and support for walking or casual hiking shoes, work shoes and boots. Provides full-length custom soft cushioning and orthopedic cushioning for your feet with neutral arch support while standing or exercising. The insole size can be cut to fit your shoes, there are clear cutting lines on the back of the insole, which can be easily trimmed and adjusted.