Only the strongest and high quality materials are used in this product. The Tri Glides are made from Aluminum Alloy, so they are light, durable and incredibly strong. This crash tested dog car harness provides impact protection in a dangerous situation like sudden braking or a crash where your furry friend could project out of the car seat. All webbing is made from vehicle tested seat belt webbing and the Crosslink technology ensures that the harness is the ultimate in strength. The Chest Plate section is padded and contoured to mold to the shape of the dog for a custom fit.