Nike SuperRep Go 3 Flyknit Next Nature Workout Shoes Size 13 Brand New in Box! The new Nike SuperRep Go 3 Flyknit Shoe is a radical design story rooted in sustainability and innovation.The zoned Flyknit construction wraps your foot in 360 degrees of comfort and support. A finely ground, reclaimed foam midsole gives you responsive cushioning for high-impact training. The lightweight, packable design lets you keep them close, no matter where your next workout takes you.