Givi GRT718 Canyon 15L Waterproof Side Bags BlackGivi GRT718 Gravel T Waterproof Saddlebags The roll top Givi GRT718 Saddlebags use high frequency welding to ensure a seamless build quality that achieves an IPX5 water resistance rating. Multiple lashing points keep the bags held tightly to your bike for maintaining an optimum center of gravity when out on the trails. Double TPU Thermoplastic polyurethane (TPU) is any of a class of polyurethane plastics with a variety of properties including