English 4LR™ Technology Ariat® Comfort At An Exceptional Value Ariat® Four Layer Rebound (4LR™) Technology™ offers Ariat®-quality comfort at an exceptional value. A 4LR™ footbed, featuring EVA cushioning, is combined with a moisture wicking sock liner and a metatarsal support pad to maintain all-day comfort and support. In combination withAriat® patented Duratread™ outsole, 4LR™ Technology provides long lasting comfort and flexibility. English 4LR™ Technology Ariat® Comfort At An Exceptional Value Ariat® Four Layer Rebound (4LR™) Technology™ offers Ariat®-quality comfort at an exceptional value. A 4LR™ footbed, featuring EVA cushioning, is combined with a moisture wicking sock liner and a metatarsal support pad to maintain all-day comfort and support. In combination withAriat® patented Duratread™ outsole, 4LR™ Technology provides long lasting comfort and flexibility.