Altra Experience Flow 2: Natural transition with reactive cushioning. The Altra Experience Flow 2 combines the brand's natural stride philosophy with a more accessible design thanks to its 4 mm drop and improved cushioning. Ideal for runners looking for a versatile shoe for daily asphalt training. Surface: Asphalt. Shoe type: Neutral. Use: Training. Weight: 231 g. Drop: 4 mm. Cushioning: EGO P35. Midsole height: 32 mm (heel) / 28 mm (forefoot). Sole: Rubber with anatomical design. Experience a new high in a shoe designed to deliver effortless, efficient strides for euphoric miles. It’s the first Altra shoe with Altra EGO™ P35 midsole foam, designed for lightweight efficiency, performance, and comfort. An updated heel fit and re-designed upper with engineered mesh improves breathability. With a low 4mm drop and rocker shape geometry, it’s a shoe made to help you experience an efficient toe-off and a smooth, quick roll through every stride. It’s got a roomy toe box and secure midfoot, so you have plenty of room to help your toes move more freely. That runner’s high you’re always chasing? It’s right at your fingertips in the Experience Flow 2.