Rubber sole The sturdy material on the top is lightweight durable. Triple stitching around the collar to eliminate hot spots. The Crater foam midsole adds stability with every step. Initially designed for performance racing, the Max Air unit in the heel adds lightweight cushioning. The translucent rubber wraps over the fender for added durability. Air Max goes crunchy granola. The updated design pairs durable fabrics with colors that throw it back to your mom's favorite ski jacket from the '90s. You can throw them on or easily hook them to your pack with webbing pull tabs that double as clip points. A little crunch goes a long way, though—the classic Air technology makes every trail feel like you're literally walking on Air.