Gardenite Stinger Expanding Elastic Garden Watering Hose, Made from Triple Layer Expandable Rubber Triple layer technology - conventional elastic hoses that extend to 3 times their length are prone to elastic fatigue and cracks because they have only 2 layers Lightweight tangle free - the stinger hose will extend to up to 3 times its length and is extremely light weighing only 1.4 Lbs Water pressure testing - conventional elastic hoses will suffer water leaks from bursting and also at the joints after being used several times