The 4.5 pant is lightweight, and breathable and unbeaten in its class. A pre-curved performance fit made up from Ripstop and X-Flow mesh panels along with a heavy-duty seat area and reinforced leather knees on both sides means this pant is ready for track or trails which ever you choose, a premium product at a great price. If you are looking for something with more of a stretch fit, check out the 5.5 IKS pant Pre-curved classic fit Light and breathable construction Ripstop stretch and X-Flow mesh panels Multi-layer inner knee reinforcement now with leather for bike grip Heavy-duty seat and reinforced knee material Material panels have multi-row reinforced stitching Waist with micro adjuster and 270 ? heavy duty silicone grip Top Quality YKK Japan Zippers Anti-odor MoistureCool mesh lining Plastic free recyclable packaging