Don't get puzzled. Zero glue, two pieces and a whole lot of comfort. Constructed with interlocking components, the ISPA Link was designed for disassembly and with the intent to use as few materials as possible. Spotlighting comfort, it places you directly on top of an ultrasoft foam midsole. The engineered knit upper keeps it airy and lightweight, while the bootie-like fit gives your foot a hug with every step. Get going, keep going—it's as easy as 1, 2. A Shoe Reborn Built to disassemble, the design features interlocking components that can easily be taken apart, showcasing how the shoe uses as few materials as possible. Comfort Rethought Its dual density midsole—which your foot sits directly on top of—delivers increased sensation and unbelievable cushioning. Slip-on Feel The engineered knit upper keeps it airy and lightweight while the bootie fit adds personalized comfort. Product Details No sockliner Pull tabs for easy on and off ISPA Improvise. Scavenge. Adapt. Protect. This is the philosophy at the forefront of Nike’s revolutionary ISPA initiative. Specifically crafted to overcome the urban environment’s most challenging obstacles—from weather to tough terrain—ISPA is on a mission to engineer sophisticated solutions to your everyday problems.