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Supple, roomy and light describe the upper of the K-Ruuz. Miminal, fast and quick-drying describe the function of the K-Ruuz. Thus, the K-Ruuz is best suited for racers with wider or high volume feet that are running any road distance in hot conditions. Is also suitable for neutral pronation or mild over-pronation.

Model Number:

Weight: 7.1 oz (size 9)

Stack Height: Heel (21mm), Forefoot (11mm)

How It Fits (based on width D) Width D=Medium

  • Sizing: Fits large; purchase 1/2 size smaller than standard running shoe size
  • Heel: Medium
  • Midfoot: Full to medium volume
  • Forefoot: Medium width
  • Toe-Box height: High
  • Arch Structure: Low height

Product Lifecycle

  • Release date: July 2010
  • Model discontinued: Unknown


The K-Swiss K-Ruuz is a minimum feature, minimum support shoe designed for speedwork and racing. It is built with a semi-curved shape.


  • K-EVA is a blend of EVA engineered to enhance cushioning and durability of the midsole.
  • K-EVA is a blend of EVA engineered to enhance cushioning and durability of the midsole.
  • Dual Density Post is located at the medial midfoot and is a higher density foam intended to reduce the rate of pronation.
  • TPU Insert is located at the bottom of the midfoot and is a thermoplastic unit designed for a smooth heel to toe transition.
  • Open Mesh covers the entire upper and allows moisture and heat to escape from within the shoe.
  • Flow Cool is located at the heel and toe and are perforations in the synthetic material designed for moisture management.
  • Five Stripe Overlays are used at the medial and lateral sides of the upper and are designed to keep the upper snug to the foot.
  • Drainage holes are located along the center of the midsole and are intended for water drainage.
  • Traditional Sockliner
  • Traditional Last
  • Aosta II is utilized at the heel and is a high density rubber designed for outsole longevity.
  • Blown Rubber is positioned at the forefoot and is a lightweight rubber intended for flexibility.

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