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The adidas Ultraboost 4.0 is a running shoe built on a full-length Boost midsole and a Primeknit upper, with a Continental rubber outsole for grip. The 'Orca' colorway reverses black and white across the knit for a bold look. It suits runners and casual wearers who want soft, springy cushioning for long days on their feet. Against lighter, firmer racing shoes it trades speed for comfort; against cheaper knit sneakers it offers more energy return and a more secure midfoot cage.
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Owners praise the Ultraboost 4.0 for its plush Boost cushioning and snug Primeknit fit, and many wear it as much for style as for running. Some find it heavy and too soft for speed work, and a few report the knit stretching over time.
The adidas Ultraboost 4.0 'Orca' is a sneaker with a black-and-white colorway that reverses the two colors. The design is inspired by the orca.
The upper is made of Primeknit material that adapts to the foot. Boost foam in the midsole provides cushioning and energy return. The outsole is Continental rubber, which gives grip.
