ARCHLINE Orthotic Plantar Fasciitis Relief Flip Flops EVA Sole, PVC Upper eva sole ARCHLINE Flip Flops are super lightweight arch support orthotic thongs that are designed to bring comfort, support and pain relief to wearers of all foot types. Ideal for foot pain relief, plantar fasciitis relief, back pain, knee pain, bad posture and a good pair for a holiday. They feature signature ARCHLINE arch support footbed technology. Our technology provides a solid foundation for your body by aligning your feet's natural posture and follows through to your knees, hips and spine.