The new ST-4 is a natural and lightweight 'speed day' shoe and cross trainer. Ideal for gym use, speed training, and natural running enthusiasts.

For the customer seeking a lightweight, natural option that provides just enough protection underfoot.

A breathable and durable upper combines with an internal skeleton lining to keep the foot secure, comfortable, and cool as well as a strategically placed overlay to  help further secure the foot over the platform. A flexible 16mm platform provides a natural ride while providing just enough cushioning and protection underfoot. A collapsible heel counter reduces weight and allows the shoe to be easily packed, making the ST-4 a great travel option. A new Ortholite footbed resists compression and reduces odor for long-term comfort and the strategically designed outsole delivers slip resistance, abrasion resistance, and weight savings by providing rubber just where you need it. Key Specs: 16mm stack height and 0mm drop, Lightweight upper, Collapsible heel counter, Ortholite Footbed,

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