GripCast Outsole:
GripCast - Ground Resistance Impact Protection Casting Polyurethane - is a massive leap forward in outsole componentry. This remarkable compound is light, thin, and durable. Atreyu's 2mm dual layer design allows for the ultimate ground feel to enhance proprioception without sacrificing longevity. Put it to the test against the best of the best.

C.U.S.H. Foam:

C.U.S.H. - Compression and Uplift Synchronization Hub - is the evolution of premium simplicity. This midsole foam is packed with 40% Pebax® + 60% Supercritical TPE and doesn't take a millimeter of stack height for granted.
AstroKnit Upper:
AstroKnit - Advanced Structural Thread with Reinforced Orientation - is a engineered mesh composed of high tenacity and elastomeric fibers. The Atreyu design ethos is functional simplicity. This upper will work as hard as you do to keep cool, secure, and performing stride after stride, mile after mile.
