Sonically welded seams ensure true waterproof integrity. Strategically placed D-rings, handles and webbing straps for easy attachment to your machine. Multiple sizes and capacities to accommodate every rider. Included webbing straps. Detailed Specificatio. Firstgear waterproof luggage was created to provide safe, waterproof protection for all your valuables. Tough, PVC tarpaulin fabrics are precision cut and sonically welded to ensure optimal seam integrity, strength and durability for the rigors of the road - on and off. Designed and developed for motorcycle riders and extensively tested over thousands of miles and a variety of terrain. Firstgear luggage will get you there - and back again. PVC tarpaulin fabric is tough, durable and long-lasting.