Rippy™ 66 Monomesh upper with TuneLug™ with Vibram® MegaGrip Litebase sole Asymmetrical lacing system to relieve Achilles and big toe pressure Unpadded tongue and collar TuneLug™ engineered outsole with Vibram® Megagrip™, Litebase™, and Traction Lug™. Interchangeable insoles included (3mm and the original 5mm) Made in Indonesia Our Style No. SATR-MZ6 Manufacturer Style No. 4002-81200