This harness was sent to the BMC by a climbing wall. An indoor climber took a lead fall and a leg loop (right leg) failed (user was not injured in the fall). From general inspection, environmental or solvent degradation of the Black Diamond Blizzard harness is clear. The heavy fading of the belay loop suggests that the harness has been damaged by a solvent/acid and may have been left hanging to dry, which has accelerated degradation on the leg loops. The strength of the fibres near the failed section of the harness have been reduced due to the degradation, and resulted in a failure of tape (connecting the leg loop to the lower tying in point) in an indoor lead fall.