Nike Metcon 6 Men's Training Shoe Black/Anthracite/Metallic Silver Size 9.5. The most breathable version yet, the Nike Metcon 6 helps keep your foot cool when you're going full steam. It stands up to the push and pull of heavily weighted and high-intensity workouts, delivering stability and durability. Style: CK9388-001 The Coolest Metcon Nearly 18% more breathable than the Metcon 5, this version features lightweight mesh that keeps air flowing and your foot cool. A durable screen print reinforces the mesh without sacrificing breathability. Stability Under Weight A low, flat and wide heel creates a stable base for weighted exercises. A removable Hyperlift insert lets you adjust the height under your heel from one set to the next. Durable Traction Rubber tread on the outsole and up the side of the shoe provides traction on the ground and grip when you're climbing a rope. Focused Cushioning Foam is firmer under the heel for a secure feel and softer in the forefoot to cushion high-impact moves. X2-6061