The Tenax bibs are made from Hercules nylon/Lycra, a Dupont certified Power Lycra, with flat seam stitching throught. They feature Giordana's new 3D-OF insert, a seamless one-piece insert that stretches with body movements and returns to its original form when at rest. This ensures superior comfort on even the longest rides. The leg openings have silicone-injected gripper elastic to prevent unwanted slippage and MCK mesh along the lower part which increases ventilation. The bibs have mesh straps and unique i-pocket for personal electronic devices.