Shimano WR42 SPD-SL shoes are great for your daily commute & longer rides on the weekend. Made from tough, stretch-resistant synthetic leather & mesh upper for breathability. Micro-adjust buckle & dual off-set straps for precise fit management. A snug, durable, breathable shoe. The Lightweight glass reinforced fiber reinforced-polyamide sole provides a smooth & efficient power transfer to the pedals. The womens specific fit Shimano Dynalast secures the foot into the ideal ergonomic position for a more efficient up stroke low-profile. Even with all these high features the shoe is still super lightweight!