The 515 Tank Tube case has double walled construction with a smooth inside. This case is durable yet lightweight. The Tank Tube is stronger than roto-molded tubes and able to withstand 7200 lbs./sq. ft. of pressure. The handle is spring-loaded steel with a rubber grip. The strap is 1.5" with a side-release buckle. The side of the case has a 6.5" x 10" label area. The top of the lid and the bottom of the case has .5" foam lining. This case will protect your display for many years. Order with or without wheels.