The inov-8 F-Lite 290 Knit provides lightweight agility and lifting support for the ultimate power-training shoe. Shoe Fit Scale: Grade 4. inov-8 shoes are designed with Met-Cradle technology to lock down the mid-foot for a stable hold. Graded on a scale of 1-5, Grade 1 represents the closest, most precise fit. Grade 5 has the widest fitting toe box. Drop: 4mm. Footbed: 3mm. Lug Depth: 3mm. Midsole Stack (Heel / Forefoot): 11mm / 7mm. Ultra-durable knit upper provides maximum flexibility and breathability. 360 ROPE-TEC system wraps around to the upper for maximum grip during rope climbs. Lace-up closure. Padded tongue and collar. EXTEROFLOW midsole reduces shock impact and delivers high levels of underfoot cushioning. EHC ( External Heel Cage ) wraps around the rear of the shoe and provides support in the heel. DFB (Dynamic Fascia Band) shank mimics the Windlass Effect to deliver a jolt of energy with each stride. POWERFLOW midsole delivers 10 percent shock absorption and 25 percent better energy return than standard midsoles. STICKY GRIP rubber delivers enhanced underfoot traction and offers multidirectional flexibility, as well as the traditional flex point that allows increased functionality in the forefoot. META-FLEX outsole grooves create a natural flexion point at the forefoot for more natural, efficient movement. Imported. Measurements: Weight: 10 oz Product measurements were taken using size UK 6 (US Womens 8.5), width Precision Fit (Medium). Please note that measurements may vary by size. Weight of footwear is based on a single item, not a pair.